Add support for saving the state of the IRQ registers over suspend.

This requires moving the S3C64XX UART registers into <plat/regs-serial.h>
and adding irq-pm.c which saves the state of all the IRQ registers.

The irq-pm.c saves all the IRQ registers, including the IRQ_EINT and
IRQ_EINT_GROUP registers as it was easier than adding three different
files. Also ensuring that all the registers are restored to the same
state as before suspend is considered to be the best thing to do.

Note, we do not suspend the VIC here, this is done by the VIC driver
itself.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the initial support for the S3C64XX based systems to use
suspend-to-RAM to sleep.

Includes basic debugging for use with the SMDK6410 usign the
LEDs on the baseboard.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add a standard helper to configure the LCD output pins for a 24BPP
display with VSYNC/HSYNC/VDEN.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add common gpio setup for i2c bus 1 on all current
S3C64XX architectures.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the necessary device initialisation information
for I2C device 0.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add gpiolib registration for the GPIOs available on the
S3C64XX platform
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the necessary code to support IRQ_EINT(x) on
the S3C64XX series of CPUs.

Note, since there is no GPIO configuration support
in the kernel, the irq set_type method does not
configure the relevant pin to interrupt.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the PLL clock initialisation and clock registration
and include the clocks sourced via CLKDIVx for most of
the on-chip peripherals.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the initial clocks definitions for the s3c6400
and s3c6410. Move the epll and ext clock from the
s3c2443 support into the common code.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the common initialisation code for both the
S3C6400 and S3C6410, the UART registration.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add and initialise the two VIC (PL192) found on
the S3C64XX series CPUs.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Initialise the basic physical to virtual mappings and
then detect the CPU that the system is being run on so
that the cpu code code can call the correct initialisation
code.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add resources and information for the UART deviecs
on the S3C64XX CPUs.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the initial PLAT_S3C64XX support files
and directory structure.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>