ACPI: Final APM_CNT_GNVS_UPDATE cleanup

All platforms moved to initialise GNVS at the time
of SMM module loading.

Change-Id: I31b5652a946b0d9bd1909ff8bde53b43e06e2cd9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48699
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/include/cpu/x86/smm.h

@@ -22,11 +22,10 @@
 #define APM_CNT_PST_CONTROL	0x80
 #define APM_CNT_ACPI_DISABLE	0x1e
 #define APM_CNT_ACPI_ENABLE	0xe1
-#define APM_CNT_MBI_UPDATE	0xeb
-#define APM_CNT_GNVS_UPDATE	0xea
 #define APM_CNT_ROUTE_ALL_XHCI	0xca
 #define APM_CNT_FINALIZE	0xcb
 #define APM_CNT_LEGACY		0xcc
+#define APM_CNT_MBI_UPDATE	0xeb
 #define APM_CNT_SMMINFO		0xec
 #define APM_CNT_SMMSTORE	0xed
 #define APM_CNT_ELOG_GSMI	0xef