mb/google/brya/var/felwinter: Add WiFi SAR table for felwinter

Add WiFi SAR table for felwinter.

BUG=b:206901900
TEST=emerge-brya chromeos-config chromeos-config-bsp-private
coreboot-private-files-baseboard-brya coreboot chromeos-bootimage
and checked SAR table can load by WiFi driver.

Signed-off-by: Ian Feng <ian_feng@compal.corp-partner.google.com>
Change-Id: I0de710f4447302ee545a67cbd79373bdd2077637
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59718
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>

src/mainboard/google/brya/Kconfig.name

@@ -108,6 +108,7 @@ config BOARD_GOOGLE_FELWINTER
 	bool "->  Felwinter"
 	select BOARD_GOOGLE_BASEBOARD_BRYA
 	select DRIVERS_GENERIC_GPIO_KEYS
+	select CHROMEOS_WIFI_SAR if CHROMEOS
 
 config BOARD_GOOGLE_ANAHERA
 	bool "->  Anahera"

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

@@ -3,6 +3,12 @@
 #include <chip.h>
 #include <fw_config.h>
 #include <baseboard/variants.h>
+#include <sar.h>
+
+const char *get_wifi_sar_cbfs_filename(void)
+{
+	return "wifi_sar_0.hex";
+}
 
 void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config)
 {