ACPI: Have single call-site for acpi_inject_nvsa()

Change-Id: I61a9b07ec3fdaeef0622df82e106405f01e89a9e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48719
Reviewed-by: Lance Zhao
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/include/acpi/acpi_gnvs.h

@@ -7,7 +7,6 @@
 
 void *acpi_get_gnvs(void);
 void *gnvs_get_or_create(void);
-void acpi_inject_nvsa(void);
 
 void gnvs_assign_chromeos(void);
 void gnvs_set_ecfw_rw(void);
@@ -18,13 +17,6 @@ size_t gnvs_size_of_array(void);
 uint32_t *gnvs_cbmc_ptr(struct global_nvs *gnvs);
 void *gnvs_chromeos_ptr(struct global_nvs *gnvs);
 
-/*
- * Creates acpi gnvs and adds it to the DSDT table.
- * GNVS creation is chipset specific and is done in soc specific acpi.c file.
- */
-struct device;
-void southbridge_inject_dsdt(const struct device *device);
-
 /*
  * These functions populate the gnvs structure in acpi table.
  * Defined as weak in common acpi as gnvs structure definition is