- Update to work for ETRAX FS and ARTPEC-3

- CONFIG_ETRAXFS_SIM -> CONFIG_ETRAX_VCS_SIM
- ser_intr_mask.data_avail -> ser_intr_mask.dav

- Don't use SANITYCHECK(x) as a macro, test FAST_TIMER_SANITY_CHECKS with
  ifdef. This makes it possible for automatic indent etc to work.
- Correct some whitespace errors.
- Don't initialize static variable.

- Include pinmux.h from machine specific directory.
- Add some more symbols: crisv32_pinmux_alloc, crisv32_pinmux_dealloc_fixed,
  crisv32_io_get_name and crisv32_io_get

The init function should be defined always.

- Moved all calls to register_chrdev to a function called by module_init.
- Added mutex locking.
- Added better error handling at start up.
- Added BIN_TO_BCD of the month value before it is saved to the RTC.
- Corrected the month value returned by pcf8563_readreg.
- Cache the voltage low value at driver init so the battery status
  information does not get 'accidentally' cleared when setting the RTC time.
- Removed obsolete CONFIG_ETRAX_RTC_READONLY
- Voltage low ioctl():s RTC_VLOW_RD -> RTC_VL_READ, RTC_VLOW_SET -> RTC_VL_CLR

Also, remove useless CVS id tag.

- Workaround for cachebug (Guinness TR 106).
- Add ARTPEC-3 support.

- Change AFLAGS to asflags-y, LDFLAGS to ldflags-y and EXTRA_CFLAGS
  to ccflags-y. We only need the flags in this Makefile.

- Change AFLAGS to asflags-y, LDFLAGS to ldflags-y and KBUILD_CFLAGS
  to ccflags-y. We only need the flags in this Makefile.

- Shorten include paths to machine dependent header files.
- Register name for first timer is now regi_timer0.
- Remove raw_printk hack, use oops_in_progress instead.
- Add handling of CPU frequency scaling for CRIS.
- Remove regs parameter to timer_interrupt, get them from get_irq_regs instead.
- Whitespace and formatting changes.

- Remove watchdog handling, handled elsewhere.
- Shorten include paths to machine dependent header files.
- Remove raw_printk hack, we now use oops_in_progress instead.
- Add handling of BUG for exception handlers (break 14).
- Formatting and whitespace changes.

- Shorten include paths for machine dependent header files.
- Remove unused extern declaration of etrax_gpio_wake_up_check.
- Register name for first timer is now regi_timer0.

- First timer register has changed name to timer0.
- Build IRQs with only IRQ number, mask bit will be calculated instead.
- Add more IRQs, up to 64 supported.
- Use arrays to hold which IRQs triggered instead of trying to do magic
  with two 32 bit values now that more than 32 IRQs are supported.

- Shorten include paths for machine specific header files.
- Add magic for booting NAND flash.
- Change CONFIG_ETRAXFS_SIM to CONFIG_ETRAX_VCS_SIM.
- Use assembler macros for initializing hardware (clocks)
- Add stubs for SMP slave CPUs.
- Search for cramfs or jffs2 if no romfs found.
- Initialize l2cache.

- Change include path to machine dependent header files.
- Remove __INLINE__, it expands to inline anyway.
- Don't initialize static variables.
- Change timers to use fasttimer_t instead of timevals.
- Change name of timeval_cmp to fasttime_cmp to highlight this.
- Register name for first timer is regi_timer0, not regi_timer.
- Whitespace and formatting changes.
- Don't return if we're blocking interrupts, goto done and restore interrupts.
- Disable interrupts while walking the fasttimer list, only restore
  while doing the callback.
- Remove #ifdef DECLARE_WAITQUEUE, this code won't be used in another OS.
- Remove CVS log.

- Shorten include paths to machine dependent headers.
- Add support for fifth serial port.
- Remove CONFIG_ETRAXFS_SIM and CONFIG_ETRAX_DEBUG_PORT_NULL, no longer used.
- Remove raw_printk and stupid_debug hack, no longer needed.
- Remove dummy console stuff, no longer needed.
- Correct some register type names.
- Correct some whitespace errors and formatting.

- Add ifdef for ETRAX_AXISFLASHMAP to avoid compiling file unless it is set.
- Use assembler macros for setting up clocks.
- Don't copy image, just jump to it (only works for NOR flash)

- Shorten include paths to machine specific headers.
- Remove fill_inbuf, not defined here.
- Return __dest as value from memcpy.
- Enable serial port hardware transmitter and receiver in serial_setup.
- Correct baudrate divisor calculation, changed from 4800 to 115200.
- Add support for Artpec-3 specific serial port setup.
- Initialize pinmux for the correct serial port.

- Fixes for NAND and NOR flash booting.
- Use assembler macros for common tasks (clocks, general io etc)
- Use (EtraxFS or Artpec-3) machine specific include for dram and hardware init.

Also add board_mmcspi to build if ETRAX_SPI_MMC_BOARD is set.
(Generic MMC SPI implementation)

- Remove old specific targets, use more generic ones instead.
- Use if_changed to avoid creating new images when no change.
- Use EXTRA_CFLAGS instead of CFLAGS.

- Remove old specific targets, use more generic ones instead.
- Use if_changed to avoid creating new images when no change.
- Use KBUILD_CFLAGS instead of CFLAGS.

- Remove old specific targets, use more generic ones instead.
- Use if_changed to avoid creating new images when no change.

- Use default partition table when no partition is found (for initial tests)
- Add config ETRAX_AXISFLASHMAP_MTD0WHOLE to allow whole flash as mtd0.
- Add config for VCS simulator connection.

- Add i2c_write and i2c_read as functions.
- Use spinlocks for critical regions.
- Add config item to set I2C data and clock port.
- Put unneeded testcode inside #if 0.
- Remove CVS id tag.

- Remove CRISv32 common arbiter, dma, io and pinmux files,
  they are now defined in machine dependent directories.
- Add cache and cacheflush files for working around cache problems
  in CRISv32 chips.

- Remove oldset parameter.
- Utilise delay-slot for parameter moving.
- Add kernel_execve as break 13.
- Add new kernel syscalls.

Now uses a DMA descriptor ring, which should avoid any unnecessary
pauses in the streams.

The two chips are somewhat different, and needs different handling.
Adds handing of the dma, dram initialization, hardware settings, io,
memory arbiter and pinmux

Also moves the dma, dram initialization and io from CRIS v32 common files.

Adds gpio and nandflash handling for Etrax-FS

Adds gpio and nandflash handling for Artpec-3.