drm/amd/display: Use helper for determining HDMI signal

Use helper to determine if HDMI signal when processing avmute.

Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Bernstein 2019-06-24 14:11:55 -04:00 • committed by Alex Deucher
commit a280a71f5e