drm: msm: sde: Fix 3d gamut programming sequence

Elements in the struct drm_msm_3d_col needs to be swapped for efficient
programming using the reg dma block. Change swaps the fields in uapi
header and fix couple of issues with disable sequence.

Change-Id: Ieb6f80f4017305ac19a9fb3babfa28f718eda483
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>