drm/msm/hdmi: Use bitwise operators when building register values

Commit c0c0d9ee ("drm/msm: hdmi audio support") uses logical
OR operators to build up a value to be written in the
REG_HDMI_AUDIO_INFO0 and REG_HDMI_AUDIO_INFO1 registers when it
should have used bitwise operators.

Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Fixes: c0c0d9ee ("drm/msm: hdmi audio support")
Signed-off-by: Rob Clark <robdclark@gmail.com>