- Add driver for TDA19988 HDMI framer
- Add simple interface to communicate with HDMI sink: read EDID and set videomode
- Add event-based API to notify LCD controller when HDMI sink is available
- Add HDMI framer node and add refernce to it to lcdc node. This part of
DTS tree is custom and does not match Linux DTS because Linux uses
combination of pseudo-node in DTS and hardcoded driver information
that does not map to our model.
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