drm/amd/display: Promote DAL to 3.2.334

This version brings along following update:
-Support external tunneling feature
-Modify DCN401 DMUB reset & halt sequence
-Fix the typo in dcn401 Hubp block
-Skip backend validation for virtual monitors

Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Taimur Hassan <Syed.Hassan@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Taimur Hassan

drivers/gpu/drm/amd/display/dc/dc.h

@@ -53,7 +53,7 @@ struct aux_payload;
 struct set_config_cmd_payload;
 struct dmub_notification;
 
-#define DC_VER "3.2.333"
+#define DC_VER "3.2.334"
 
 /**
  * MAX_SURFACES - representative of the upper bound of surfaces that can be piped to a single CRTC