drm/msm/sde: fix color component order in sde

SDE drm driver should support the default color
component order instead of operating system
specific order. For opensource compositor; it will
use default color component order while android
compositors will take care of reversing the color
component order.

Change-Id: I61b953ce892834453e92a8c2cfdcb427456966bb
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>