Revert "Revert "video: msm: Add user-defined backlight scaling""

This reverts commit efbe32f4cdb727fc9d6f35d792e691567a1ccb57.
msm_fb: Provide IOCTL to configure QSEED tables

Provide sub-operation for MSMFB_MDP_PP IOCTL to configure QSEED tables.
QSEED is used for smoothing, sharpening and scaling of content on video
pipes in MDP.

Change-Id: I069d9c793553cb4c400973690ebd7f8d3bcc1c68
Signed-off-by: Pravin Tamkhane <pravint@codeaurora.org>
(cherry picked from commit 67726da111c4e6e10d21a3759f9f96ae0fefb2c2)

Conflicts:

	include/linux/msm_mdp.h

Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>