[PATCH/RFC] Add Widescreen Signalling to intel driver

[elupus]

Hi, 

I'm playing around with wss switching in the intel driver. According to
docs it should be supported. This is what I have so far, I assume the
signal sent should be based on resolution, and only sent when in SD modes.
But i'd like to get it working first :).

This patch doesn't seem to work at the moment. I think it could be partly
due to this comment that's in intel docs 

"IMPORTANT: Since WSS uses line 23 to transmit data, the active region has
to be downsized by two lines and the vertical blanking has to be increased
by two lines."

Any ideas on how to fix that?

Regards
Joakim