Change LCM to command mode

Rootcause:
LCM module has a ram(HX83112"B"),
therefore it can enable command mode.
According to HW and Vendor said, it is helpful for power saving.
In my experimental result,
it is reduce 37.38mA than video mode when idle.

Howtofix:
Vendor said, the initial code is already command mode,
but it can support video and command mode.
if we choose command mode, Peripherals(LCM)'s timing fixed.
so host need to cooperate it.

Panel mode of LCM drivers in lk and kernel have to consistent.

RiskArea:
LCM

Change-Id: I7544fe51c091a0f03735bdab8625111e17e402da