Only build if 907 variant is reqeusted
display: Add option to disable hardware VSYNC

* Set TARGET_NO_HW_VSYNC to disable use of VSYNC

Change-Id: I01f1c8070bfd94d9e332e1aa806799c0560fa482
display: allow disabling of HDMI out for devices which don't support it

Change-Id: I23f07735b529f80d09663c35e79c6d810b837a16

Conflicts:

	common.mk
display: Add option to disable MSMFB_OVERLAY

* Set TARGET_NO_HW_OVERLAY to disable use of MSMFB_OVERLAY

Change-Id: I99c7647bfaf95e6078d261bfdca96c72e7b06779
display: add things covered by QCOM_ICS_COMPAT

Change-Id: I6f27819e68be77c25317183bb25dc1e6db3ac4fd

Conflicts:

	libgralloc/alloc_controller.cpp
	libgralloc/gpu.cpp