driver: msm_fb: default to 4bpp.
Based on this commit:
https://github.com/existz/htc-kernel-msm7x30/commit/f30e47b6c1abbc3d81283a9a1075c2e3d631e389

Signed-off-by: Thạch Tùng Anh <thachtunganh@gmail.com>
[SPADE]msm: spade: Reverts "MSM_GPU_MEM_SIZE", "MSM_PMEM_ADSP_SIZE", "MSM_FBSIZE" back to original sizes.
We don't need 620MB of total memory (free RAM). Reverting those memory sizes will fix camera issues. And we don't need Triple Buffering at this time, this kernel is compiled for ICS with Sense.
[SPADE]DO NOT MERGE THIS COMMIT!: Change to a new memory size for frame buffer.
PLEASE DO NOT MERGE THIS COMMIT IF YOU DON'T KNOW WHAT YOU ARE DOING!
This is only my private patch.
spade: button backlight to normal brightness

Conflicts:

	arch/arm/mach-msm/board-spade.c
Merge branch 'master' into thachtunganh