[XS] Change in coreboot[master]: mb/google/rex/var/rex0: Use FW_CONFIG to select the correct SAR table

[Martin L Roth (Code Review)]

Martin L Roth has submitted this change. ( https://review.coreboot.org/c/coreboot/+/77428?usp=email )

Change subject: mb/google/rex/var/rex0: Use FW_CONFIG to select the correct SAR table
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mb/google/rex/var/rex0: Use FW_CONFIG to select the correct SAR table

This patch changes the SAR table selection logic to use FW_CONFIG which
will eventually help to support different WiFi SAR tables.

TEST=Able to build and boot google/rex.

Change-Id: I8f1244e3c3715bc3fbe6be1ade87817ff19836de
Signed-off-by: YH Lin 
Signed-off-by: Subrata Banik 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77428
Reviewed-by: Eric Lai 
Tested-by: build bot (Jenkins) 
---
M src/mainboard/google/rex/Kconfig
M src/mainboard/google/rex/variants/rex0/variant.c
2 files changed, 2 insertions(+), 1 deletion(-)

Approvals:
  Eric Lai: Looks good to me, approved
  YH Lin: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/src/mainboard/google/rex/Kconfig b/src/mainboard/google/rex/Kconfig
index ceab29e..8d89d2b 100644
--- a/src/mainboard/google/rex/Kconfig
+++ b/src/mainboard/google/rex/Kconfig
@@ -48,6 +48,7 @@
 config BOARD_GOOGLE_MODEL_REX
    def_bool n
    select BOARD_GOOGLE_BASEBOARD_REX
+	select CHROMEOS_WIFI_SAR if CHROMEOS
    select DRIVERS_GENERIC_MAX98357A
    select DRIVERS_GENESYSLOGIC_GL9755
    select DRIVERS_INTEL_ISH
diff --git a/src/mainboard/google/rex/variants/rex0/variant.c b/src/mainboard/google/rex/variants/rex0/variant.c
index 6641d4b..2441f96 100644
--- a/src/mainboard/google/rex/variants/rex0/variant.c
+++ b/src/mainboard/google/rex/variants/rex0/variant.c
@@ -12,7 +12,7 @@

const char *get_wifi_sar_cbfs_filename(void)
 {
-	return "wifi_sar_0.hex";
+	return get_wifi_sar_fw_config_filename(FW_CONFIG_FIELD(WIFI));
 }

void variant_generate_s0ix_hook(enum s0ix_entry entry)