drm/amd/display: block passive dongle EDID Emulation for USB-C ports

[Why]
Emulating passive dongle on USB-C port causes issue on some asics.

[How]
Check for DP_IS_USB_C flag in bios parser and propagate it to
encoder features flags. If DP_IS_USB_C flag is set and it is trying to
emulate passive dongle, then return fail.

Signed-off-by: Samson Tam <[e-mail]>
Reviewed-by: Tony Cheng <[e-mail]>
Acked-by: Bhawanpreet Lakha <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c

···
 			ATOM_ENCODER_CAP_RECORD_HBR3_EN) ? 1 : 0;
 	info->HDMI_6GB_EN = (record->encodercaps &
 			ATOM_ENCODER_CAP_RECORD_HDMI6Gbps_EN) ? 1 : 0;
+	info->DP_IS_USB_C = (record->encodercaps &
+			ATOM_ENCODER_CAP_RECORD_USB_C_TYPE) ? 1 : 0;
 
 	return BP_RESULT_OK;
 }

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c

···
 		enc10->base.features.flags.bits.IS_HBR3_CAPABLE =
 				bp_cap_info.DP_HBR3_EN;
 		enc10->base.features.flags.bits.HDMI_6GB_EN = bp_cap_info.HDMI_6GB_EN;
+		enc10->base.features.flags.bits.DP_IS_USB_C =
+				bp_cap_info.DP_IS_USB_C;
 	} else {
 		DC_LOG_WARNING("%s: Failed to get encoder_cap_info from VBIOS with error code %d!\n",
 				__func__,

drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h

···
 			uint32_t IS_TPS3_CAPABLE:1;
 			uint32_t IS_TPS4_CAPABLE:1;
 			uint32_t HDMI_6GB_EN:1;
+			uint32_t DP_IS_USB_C:1;
 		} bits;
 		uint32_t raw;
 	} flags;

drivers/gpu/drm/amd/display/include/bios_parser_types.h

···
 	uint32_t DP_HBR2_EN:1;
 	uint32_t DP_HBR3_EN:1;
 	uint32_t HDMI_6GB_EN:1;
-	uint32_t RESERVED:30;
+	uint32_t DP_IS_USB_C:1;
+	uint32_t RESERVED:27;
 };
 
 #endif /*__DAL_BIOS_PARSER_TYPES_H__ */