hwc: build hwcomposer from hardware/ti/omap3/hwc
latona: don't override compiler flags

Change-Id: I9e0e1225a84e2d2bbe33a94366916c9289390607
latona: media_codecs: temporarily revert back to default 720p decoder

There are occasional DSPMMU_FAULTS while playing certain videos using
OMX.TI.Video.Decoder which require investigation. Temporarily revert
back to using the 720P decoder for all the media until a proper fix
is in place.

Change-Id: I8c0bb37ec9520c11045170647f70a8fba9068f0d
init: enable KSM

Change-Id: I4d5164ce7c4f293c2e3e4a9053d8a5d9737e7eb5