target: msm8996: provide hdmi vic in cmdline

Add HDMI VIC (Video Identification Code) to
cmdline so that kernel can know HDMI resolution
configured in the bootloader, and can configure
MDP accordingly.
The mdss cmdline is of below format:
mdss_mdp.panel=<lk_cfg>:<panel name>:<vic code>
e.g.
mdss_mdp.panel=1:hdmi:16
where 16 represents 1080p resolution.

Change-Id: I29b35a1700c417fff46c47c485e4c38347d1560c
2 files changed