drm/radeon/hdmi: compile audio status in 1 function

This optmizes calls, registers reads and assignments.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --cc drivers/gpu/drm/radeon/r600_audio.c
Simple merge

diff --cc drivers/gpu/drm/radeon/r600_hdmi.c
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon.h
Simple merge

diff --cc drivers/gpu/drm/radeon/radeon_asic.h
Simple merge