gaze20: TCP3 is actually DDI4 and does not have DDC

Change-Id: Iafb7d137332ee0668dfc1a3cf47a4d881b8cdfb8
Signed-off-by: Jeremy Soller <[email protected]>

Author: jackpot51

src/mainboard/system76/rpl/variants/gaze20/overridetree.cb

@@ -5,12 +5,12 @@ chip soc/intel/alderlake
 		subsystemid 0x1558 0x2560 inherit
 
 		device ref igpu on
-			# DDIA is eDP, DDIB is mDP, DDI3 is USB-C
+			# DDIA is eDP, DDIB is mDP, TCP3 (DDI4) is USB-C
 			register "ddi_portA_config" = "1"
 			register "ddi_ports_config" = "{
 				[DDI_PORT_A] = DDI_ENABLE_HPD,
 				[DDI_PORT_B] = DDI_ENABLE_HPD | DDI_ENABLE_DDC,
-				[DDI_PORT_3] = DDI_ENABLE_HPD | DDI_ENABLE_DDC,
+				[DDI_PORT_4] = DDI_ENABLE_HPD,
 			}"
 
 			register "gfx" = "GMA_DEFAULT_PANEL(0)"