drm/vc4: hdmi: Correct HDMI timing registers for interlaced modes

drm/vc4: hdmi: Correct HDMI timing registers for interlaced modes

[ Upstream commit 0ea77a679416df81ab43136ac8b07661ded9a76f ]

For interlaced modes the timings were not being correctly
programmed into the HDMI block, so correct them.

Fixes: e40b36e7391d ("drm/vc4: hdmi: Support the BCM2711 HDMI controllers")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20220613144800.326124-33-maxime@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Sasha Levin <sashal@kernel.org>