There are still some mysteries left, in particular how (and in
fact if) the EDID is supposed to work on the HDMI port. However
the basic stuff now works and I can plug my Q550 into an HDMI
display and get the expected results.

[v2: cleans up space/tab and other formatting as per Dave's
 request]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>