mb/google/herobrine: Retrieve SKU ID from EC

BUG=b:186264627
BRANCH=none
TEST=build herobrine

Signed-off-by: Philip Chen <philipchen@google.com>
Change-Id: Id3faf7af64c0129ec646a01085adc43b561225d2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56354
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>

src/mainboard/google/herobrine/Kconfig

@@ -9,6 +9,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select COMMON_CBFS_SPI_WRAPPER
 	select EC_GOOGLE_CHROMEEC if !BOARD_GOOGLE_SENOR
 	select EC_GOOGLE_CHROMEEC_RTC if !BOARD_GOOGLE_SENOR
+	select EC_GOOGLE_CHROMEEC_SKUID if !BOARD_GOOGLE_SENOR
 	select EC_GOOGLE_CHROMEEC_SPI if !BOARD_GOOGLE_SENOR
 	select RTC if !BOARD_GOOGLE_SENOR
 	select MISSING_BOARD_RESET if BOARD_GOOGLE_SENOR

src/mainboard/google/herobrine/Makefile.inc

@@ -1,8 +1,8 @@
 ## SPDX-License-Identifier: GPL-2.0-only
 
-all-y += boardid.c
 all-y += chromeos.c
 ifneq ($(CONFIG_BOARD_GOOGLE_SENOR),y)
+all-y += boardid.c
 all-y += reset.c
 endif
 bootblock-y += bootblock.c

src/mainboard/google/herobrine/boardid.c

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <boardid.h>
+#include <ec/google/chromeec/ec.h>
 #include <gpio.h>
 
 uint32_t board_id(void)
@@ -19,7 +20,5 @@ uint32_t ram_code(void)
 
 uint32_t sku_id(void)
 {
-	static uint32_t id = UNDEFINED_STRAPPING_ID;
-
-	return id;
+	return google_chromeec_get_board_sku();
 }