drm/amd/display: Disable TBT3 DSC work around by default.

[Why]
Some TBT3 docks have DPOAs which report USB4 capability and are expected
to support USB4 DPOA features such as FEC/DSC.

[How]
By default, do not override FEC/DSC capabilities reported by TBT3 docks.
Reviewed-by: Meenakshikumar Somasundaram <Meenakshikumar.Somasundaram@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -5553,7 +5553,7 @@ static bool retrieve_link_cap(struct dc_link *link)
 		 * only if required.
 		 */
 		if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA &&
-				!link->dc->debug.dpia_debug.bits.disable_force_tbt3_work_around &&
+				link->dc->debug.dpia_debug.bits.enable_force_tbt3_work_around &&
 				link->dpcd_caps.is_branch_dev &&
 				link->dpcd_caps.branch_dev_id == DP_BRANCH_DEVICE_ID_90CC24 &&
 				link->dpcd_caps.branch_hw_revision == DP_BRANCH_HW_REV_10 &&

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

@@ -542,7 +542,7 @@ union dpia_debug_options {
 		uint32_t force_non_lttpr:1; /* bit 1 */
 		uint32_t extend_aux_rd_interval:1; /* bit 2 */
 		uint32_t disable_mst_dsc_work_around:1; /* bit 3 */
-		uint32_t disable_force_tbt3_work_around:1; /* bit 4 */
+		uint32_t enable_force_tbt3_work_around:1; /* bit 4 */
 		uint32_t reserved:27;
 	} bits;
 	uint32_t raw;