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>

src/soc/intel/baytrail/smihandler.c

@@ -18,8 +18,6 @@
 #include <soc/pmc.h>
 #include <soc/nvs.h>
 
-/* GNVS needs to be set by coreboot initiating a software SMI. */
-static struct global_nvs *gnvs;
 static int smm_initialized;
 
 int southbridge_io_trap_handler(int smif)
@@ -44,11 +42,6 @@ void southbridge_smi_set_eos(void)
 	enable_smi(EOS);
 }
 
-struct global_nvs *smm_get_gnvs(void)
-{
-	return gnvs;
-}
-
 static void busmaster_disable_on_bus(int bus)
 {
 	int slot, func;