Add HTC's RGBA offset variant

Change-Id: I3c0ec45640eec54fdd43b2f61fa158be5a07e522
For devices like htc marvel and liberty, some pixel formats aren't supported and compile fails
define following in your boardconfig to make use of it
COMMON_GLOBAL_CFLAGS += -DQCOM_MISSING_PIXEL_FORMATS

Commit is derived from http://goo.gl/91KJ9
liboverlay: Make sure the crop rectangles' dimensions are even

Even out the values for both dimensions and position on both src
and destination rects.
This fixes both over and underrun issues, especially with HD panels

Change-Id: I781792d69cad83f76c3c0a45a5179a731661c3cf
qdutils: Don't assume we support overlay without version info.

If we can't determine the version we shouldn't assume that overlay is
supported. If it is still needed there should be a config to force
overlay support.

Change-Id: Ic1000fdcd5ffefc517782eca605fc63b88f47602
copybit: Fix compile error for 7x27

Change-Id: Iba9cdaa8a73a7b2afcf4a6ca546c6c4e1ea025f4
hwc: Retry vsync on EBUSY

The driver returns EBUSY if it is unable to complete the frame
within a timeout - this is a recoverable error

Change-Id: Ifde01c1d7515598a82d032c0ba869fa658b050a9