ACPI GNVS: Replace uses of smm_get_gnvs()

Change-Id: I7b657750b10f98524f011f5254e533217fe94fd8
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42849
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/mainboard/google/link/mainboard_smi.c b/src/mainboard/google/link/mainboard_smi.c
index e60ceae..827ec17 100644
--- a/src/mainboard/google/link/mainboard_smi.c
+++ b/src/mainboard/google/link/mainboard_smi.c
@@ -49,18 +49,18 @@
 	/* Disable USB charging if required */
 	switch (slp_typ) {
 	case ACPI_S3:
-		if (smm_get_gnvs()->s3u0 == 0)
+		if (gnvs->s3u0 == 0)
 			google_chromeec_set_usb_charge_mode(
 				0, USB_CHARGE_MODE_DISABLED);
-		if (smm_get_gnvs()->s3u1 == 0)
+		if (gnvs->s3u1 == 0)
 			google_chromeec_set_usb_charge_mode(
 				1, USB_CHARGE_MODE_DISABLED);
 		break;
 	case ACPI_S5:
-		if (smm_get_gnvs()->s5u0 == 0)
+		if (gnvs->s5u0 == 0)
 			google_chromeec_set_usb_charge_mode(
 				0, USB_CHARGE_MODE_DISABLED);
-		if (smm_get_gnvs()->s5u1 == 0)
+		if (gnvs->s5u1 == 0)
 			google_chromeec_set_usb_charge_mode(
 				1, USB_CHARGE_MODE_DISABLED);
 		break;