ChromeOS: Add DECLARE_x_CROS_GPIOS()

Change-Id: I88406fa1b54312616e6717af3d924436dc4ff1a6
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58899
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/mainboard/google/jecht/chromeos.c

@@ -71,12 +71,7 @@ static const struct cros_gpio cros_gpios[] = {
 	CROS_GPIO_REC_AL(GPIO_REC_MODE, CROS_GPIO_DEVICE_NAME),
 	CROS_GPIO_WP_AH(GPIO_SPI_WP, CROS_GPIO_DEVICE_NAME),
 };
-
-const struct cros_gpio *variant_cros_gpios(size_t *num)
-{
-	*num = ARRAY_SIZE(cros_gpios);
-	return cros_gpios;
-}
+DECLARE_CROS_GPIOS(cros_gpios);
 
 int get_ec_is_trusted(void)
 {