Signed-off-by: NMarian Balakowicz <m8@semihalf.com>

Introducing routines for parsing new uImage format bootm arguments:
[<addr>]#<conf>		- configuration specification
[<addr>]:<subimg>	- subimage specification

New format images can contain multiple subimages of the same type. For example
a single new format image file can contain three kernels, two ramdisks and a
couple of FDT blobs. Subimage and configuration specifications are extensions
to bootm (and other image-related commands) arguments' syntax that allow to
specify which particular subimage should be operated on.

Subimage specification is used to denote a particular subimage. Configurations
are a bit more complex -- they are used to define a particualr booting setup,
for example a (kernel, fdt blob) pair, or a (kernel, ramdisk, fdt blob) tuple,
etc.
Signed-off-by: NMarian Balakowicz <m8@semihalf.com>

This routine assures that image (whether legacy or FIT) is not
in a special dataflash storage.

If image address is a dataflash address image is moved to system RAM.
Signed-off-by: NMarian Balakowicz <m8@semihalf.com>

This patch moves common pre-boot allocation steps shared between PPC
and M68K to a helper routines:

common:
- get_boot_sp_limit()
- get_boot_cmline()
- get_boot_kbd()

platform:
- set_clocks_in_mhz()
Signed-off-by: NMarian Balakowicz <m8@semihalf.com>

Ramdisk loading code, including initrd_high variable handling,
was duplicated for PPC and M68K platforms. This patch creates
common helper routine that is being called from both platform
do_bootm_linux() routines.
Signed-off-by: NMarian Balakowicz <m8@semihalf.com>

Architecture specific do_bootm_linux() routines share common
ramdisk image processing code. Move this code to a common
helper routine.
Signed-off-by: NMarian Balakowicz <m8@semihalf.com>

Move numeric-id to name translation for image os/arch/type/comp header
fields to a helper routines: image_get_os_name(), image_get_arch_name(),
image_get_type_name(), image_get_comp_name().
Signed-off-by: NMarian Balakowicz <m8@semihalf.com>

- use single image header pointer instead of a set of auxilliary variables.
- add multi component image helper routines: get component size/data address
Signed-off-by: NMarian Balakowicz <m8@semihalf.com>

Move common, watchdog sensible memmove code to a helper memmmove_wd() routine.
Signed-off-by: NMarian Balakowicz <m8@semihalf.com>

- Add inline helper macros for basic header processing
- Move common non inline code common/image.c
- Replace direct header access with the API routines
- Rename IH_CPU_* to IH_ARCH_*
Signed-off-by: NMarian Balakowicz <m8@semihalf.com>