mb/google/brya/var/omnigul: Add WIFI SAR table

Add WIFI SAR table for omnigul.

BUG=b:273170023,b:273652516
TEST=FW_NAME=omnigul emerge-brya coreboot

Change-Id: I2db057371754961503cfdc59f21c365fc82672c4
Signed-off-by: Jamie Chen <jamie_chen@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73940
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Derek Huang <derekhuang@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>

src/mainboard/google/brya/Kconfig.name

@@ -337,6 +337,7 @@ config BOARD_GOOGLE_OMNIGUL
 	select SOC_INTEL_RAPTORLAKE
 	select USE_UNIFIED_AP_FIRMWARE_FOR_UFS_AND_NON_UFS
 	select DRIVERS_INTEL_ISH
+	select CHROMEOS_WIFI_SAR if CHROMEOS
 
 config BOARD_GOOGLE_CONSTITUTION
 	bool "->  Constitution"

src/mainboard/google/brya/variants/omnigul/Makefile.inc

@@ -3,6 +3,8 @@ bootblock-y += gpio.c
 
 ramstage-y += gpio.c
 
+ramstage-y += variant.c
+
 romstage-y += gpio.c
 
 romstage-y += memory.c

src/mainboard/google/brya/variants/omnigul/variant.c

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <sar.h>
+
+const char *get_wifi_sar_cbfs_filename(void)
+{
+	return "wifi_sar_0.hex";
+}