msm: mdss: add BL_DCS_CMD on 8x10

Support BL_DCS_CMD function to adjust brigtness in 8x10/12.

Change-Id: If7cf7eff9509c043af4be6e6ec5f0039346f8e0a
Signed-off-by: Shuo Yan <shuoy@codeaurora.org>
3 files changed