Having hsync both start and end on pixel 1072 ain't gonna work very
well.  Matches the X server's list.
Signed-off-by: NAdam Jackson <ajax@redhat.com>
Tested-By: NMichael Tokarev <mjt@tls.msk.ru>
Cc: stable@kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>