mb/trulo/var/pujjolo: Change wifi SAR id fw config bits

Because of the internal misunderstanding, so now correct the right fw
config of wifi SAR id number from 18 to 21 to 17 to 20.

BUG=b:395763555
BRANCH=none
TEST=Build and boot to OS and check coreboot log to check the wifi SAR table could work fine.

Change-Id: Ib006996fb8887a36feb5dfe71baef58fa74c35f7
Signed-off-by: Luca Lai <luca.lai@lcfc.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88200
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Alicja Michalska <ahplka19@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

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

@@ -4,7 +4,7 @@ fw_config
 		option LTE_PRESENT		1
 		option 5G_PRESENT		2
 	end
-	field WIFI_SAR_ID 18 21
+	field WIFI_SAR_ID 17 20
 		option WIFI_SAR_TABLE_AX211	0
 		option WIFI_SAR_TABLE_AX203	1
 	end