dev: gcdb: implement pre-initialize function

Certain panels need DSI clock and data lanes in (Low Power)
LP11 state before enabling the hardware reset line. Some
panels also require master delay to reach mipi master and
slave in functional state. Such panels' configuration
is handled through pre-initialize API.

Change-Id: Ica900259b653f37191faa213875635b64a137e73
1 file changed