drm/amd/display: Set/Reset avmute when disable/enable stream

[Why]
When disconnect fe from be, something such as unstable clock may cause
garbage occurs.

[How]
Send set avmute at the beginning of disable stream and send reset avmute
at the end of enable stream.
Signed-off-by: Jinze Xu <jinze.xu@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -3245,6 +3245,10 @@ void core_link_enable_stream(
 			dp_set_dsc_enable(pipe_ctx, true);
 
 	}
+
+	if (pipe_ctx->stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) {
+		core_link_set_avmute(pipe_ctx, false);
+	}
 }
 
 void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
@@ -3257,6 +3261,10 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx)
 			dc_is_virtual_signal(pipe_ctx->stream->signal))
 		return;
 
+	if (pipe_ctx->stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) {
+		core_link_set_avmute(pipe_ctx, true);
+	}
+
 #if defined(CONFIG_DRM_AMD_DC_HDCP)
 	update_psp_stream_config(pipe_ctx, true);
 #endif