video:msm: Add IGC support to Overlay Post Processing

Allow for each YUV, RGB, and DMA pipe to configure their own IGC to correct
for individual gamma curves of the source content.

Change-Id: I84864efaf8b9f58ea75ca1cc306f7888f4bc28f5
Signed-off-by: Carl Vanderlip <carlv@codeaurora.org>
[smuckle@codeaurora.org: backported from msm-3.7]
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
6 files changed