drm/msm: hdmi audio support

Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --cc drivers/gpu/drm/msm/Makefile
Simple merge

diff --cc drivers/gpu/drm/msm/hdmi/hdmi.c
Simple merge

diff --cc drivers/gpu/drm/msm/hdmi/hdmi.h
Simple merge

diff --cc drivers/gpu/drm/msm/hdmi/hdmi_audio.c
Simple merge

diff --cc drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
Simple merge