[U-Boot] SPL Linux Boot - updated

[Stefano Babic]

Hi,

here an updated version of the patchset to boot Linux directly from SPL.
It fixes the (minor) comments received in version 11.

List of changes:

- drop commented lines into arch/arm/cpu/armv7/Makefile after checking build
  for OMAP4/5
- use CONFIG_SPL_I2C_SUPPORT to protect I2C code
- fix TAB / spaces issues (codestyle)
- add missing include to fix OMAP4/5 build
- use a different GPIO on the twister board to select image to boot

[PATCH V12 01/14] Add cmd_spl command
[PATCH V12 02/14] devki8000: add config for spl command
[PATCH V12 03/14] omap-common: Add NAND SPL linux booting
[PATCH V12 04/14] devkit8000/spl: init GPMC for dm9000 in SPL
[PATCH V12 05/14] omap-common/spl: Add linux boot to SPL
[PATCH V12 06/14] omap/spl: change output of spl_parse_image_header
[PATCH V12 07/14] devkit8000: Implement and activate direct OS boot
[PATCH V12 08/14] Add cache functions to SPL for armv7
[PATCH V12 09/14] OMAP3: SPL: do not call I2C init if no I2C is set.
[PATCH V12 10/14] OMAP3: move SPL files to be used by other
[PATCH V12 11/14] TI: SPL: make SPL available for other SOCs as TI
[PATCH V12 12/14] SPL: call cleanup_before_linux() before booting
[PATCH V12 13/14] Fix build OMAP4/5
[PATCH V12 14/14] OMAP3: twister: add support to boot Linux from SPL