drm/amd/display: skip avmute action

[Why]
For some monitors,
they can't display under BIOS with avmute enabled.

[How]
Add monitor patch for skip avmute action.

Signed-off-by: Brandon Syu <Brandon.Syu@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>