mooncake: clean up board files

Removed useless camera code from blade board
Removed obsolete MSM_GPU_PHYS_SIZE
Removed useless ifdefs
Removed msm7x25 related code
Removed useless lcdc ifdefs
Removed useless qcom board code

Change-Id: I938aebb72b985982a5e57ce69e5af7f5bc7f7919