Fix NVIDIA GPU on bonw15

Change-Id: Idc5761dd63959e5997387168f5ac68eac2da0217

src/mainboard/system76/rpl/Kconfig

@@ -133,3 +133,10 @@ config USE_PM_ACPI_TIMER
 	default n
 
 endif
+
+if BOARD_SYSTEM76_BONW15
+
+config DRIVERS_GFX_NVIDIA_BRIDGE
+	default 0x02
+
+endif

src/mainboard/system76/rpl/acpi/mainboard.asl

@@ -14,15 +14,15 @@ Scope (\_SB) {
 		#include "backlight.asl"
 
 #if CONFIG(DRIVERS_GFX_NVIDIA)
-#if CONFIG(SOC_INTEL_ALDERLAKE_PCH_S)
-		Scope (PEG1) {
-			#include <drivers/gfx/nvidia/acpi/tigerlake.asl>
-		}
-#else // CONFIG(SOC_INTEL_ALDERLAKE_PCH_S)
+#if CONFIG(SOC_INTEL_ALDERLAKE_PCH_P) || CONFIG(BOARD_SYSTEM76_BONW15)
 		Scope (PEG2) {
 			#include <drivers/gfx/nvidia/acpi/tigerlake.asl>
 		}
-#endif // CONFIG(SOC_INTEL_ALDERLAKE_PCH_S)
+#else
+		Scope (PEG1) {
+			#include <drivers/gfx/nvidia/acpi/tigerlake.asl>
+		}
+#endif
 #endif // CONFIG(DRIVERS_GFX_NVIDIA)
 	}
 }