mdss: display: add dsi command mode panel support

Add changes to support TE signal needed for smart panels.
The panel backlight is controlled using pwm.

Change-Id: Id596b466b6fd16efbb26ffcc35db94c9939007b0
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org>
14 files changed