drm/amd/display: Handle virtual hardware detect

If virtual hardware is detected, there is no reason to run the full
dc_commit_streams process, and DC can return true immediately.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Co-developed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1912,6 +1912,9 @@ enum dc_status dc_commit_streams(struct dc *dc,
 	enum dc_status res = DC_OK;
 	struct dc_validation_set set[MAX_STREAMS] = {0};
 
+	if (dc->ctx->dce_environment == DCE_ENV_VIRTUAL_HW)
+		return res;
+
 	if (!streams_changed(dc, streams, stream_count))
 		return res;