Adding a new board variant for UBOOT

Created a new machine type for QRDC board.
Modified Make file to have QRDC specific revoery config

Added common.h, fast.h and stub.h into qrdc board variant.
Currently these are not different from MSM8x60 --but in future they might differ to some extent.

Added a new target for QRDC Board in UBOOT Make file.
Created a new UBOOT target configuration for chromeos_qrdc_recovery_config
All the board specific files for QRDC Board bring up.
Machine id is different.
These files will be used in the QRDC specific build variant.
UBOOT's makefile has a corresponding target to build for QRDC board.

BUG=NONE
TEST=Buildonly test for QRDC and modifying the machine ID, build and test for 8660 FFA.

Review URL: http://codereview.chromium.org/3479014
Patch from Phani Avadhanam <pgargey@codeaurora.org>.
5 files changed