mb/google/brya0: Add FW_CONFIG for UFC

UFC on brya can be USB or MIPI
Add FW_CONFIG bit for this option

Signed-off-by: Varshit B Pandya <varshit.b.pandya@intel.com>
Change-Id: I2f1492d7c769aba8da80763124dda474b32cfbfa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55780
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/mainboard/google/brya/variants/brya0/overridetree.cb

@@ -23,6 +23,10 @@ fw_config
 		option LTE_USB			1
 		option LTE_PCIE			2
 	end
+	field UFC 13 14
+		option UFC_USB			0
+		option UFC_MIPI_5675		1
+	end
 end
 
 chip soc/intel/alderlake