msm_fb: display: add support for frc

Frame rate converter(frc) is treated as LVDS 1080p panel
Its configuration is based on HDMI 1080p60 mode
LVDS dual channel mode will be used

Change-Id: Id3a17f107c8398ddb47105d064be2743a150a3b3
Signed-off-by: Ken Zhang <kenz@codeaurora.org>