target: msm8909: init display config to suupport msm8909

Add changes to:
1.add SPI panel cmd info.
2.enable regulator for SPI panel.
3.add dc and backlight gpio control for SPI panel.

Change-Id: I168bbf00bfb54b46ee0d20e314138332d079d8dd
Signed-off-by: Wenjun Zhang <wjzhan@codeaurora.org>
3 files changed