ARM: dts: msm: Modify the LM and power config for QRD SM8150 display

Since the continue splash feature was enabled by UEFI,
the LM config should be the same as UEFI config.
The power supply of the panel should be kept on when
kernel booting up.

Change-Id: I6070e20975d4a4a108d482647af154ca685967a9
Signed-off-by: Yuan Zhao <yzhao@codeaurora.org>