UPSTREAM: ASoC: hdmi-codec: Rework to support more controls

We're going to add more controls to support the IEC958 output, so let's
rework the control registration a bit to support more of them.

Bug: 239396464
Change-Id: Ia8c0bf8c997638b5a121ae7356fa1eb27746036f
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210525132354.297468-4-maxime@cerno.tech


Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
(cherry picked from commit 366b45b9)