mb/google/nissa/var/uldren: Add wifi sar table

Add wifi sar table for uldren

BUG=b:279679700
BRANCH=firmware-nissa-15217.B
TEST=emerge-nissa coreboot chromeos-bootimage

Change-Id: I9e3d7a06beb673b204f2dfe8e7beb919730aa885
Signed-off-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75010
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shou-Chieh Hsu <shouchieh@google.com>
Reviewed-by: Derek Huang <derekhuang@google.com>

src/mainboard/google/brya/Kconfig.name

@@ -365,6 +365,7 @@ config BOARD_GOOGLE_HADES
 config BOARD_GOOGLE_ULDREN
 	bool "->  Uldren"
 	select BOARD_GOOGLE_BASEBOARD_NISSA
+	select CHROMEOS_WIFI_SAR if CHROMEOS
 	select DRIVERS_I2C_CS42L42
 	select HAVE_WWAN_POWER_SEQUENCE
 

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

@@ -4,3 +4,4 @@ bootblock-y += gpio.c
 romstage-y += gpio.c
 
 ramstage-y += gpio.c
+ramstage-$(CONFIG_FW_CONFIG) += variant.c

src/mainboard/google/brya/variants/uldren/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";
+}