drm/sde/msm: Add support for 3d gamut interface

Change exposes the interface for 3d lut feature.On platforms where 3d
gamut is supported, user-space clients can program the feature with the
exposed interface.

Change-Id: I1866bb408a7e3092a1271a6ac585aa8b6c4b1bcb
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>