Enforce disabling of firmware disk drivers when native drivers kick in.

grub-core/disk/ieee1275/ofdisk.c

@@ -549,14 +549,6 @@ insert_bootpath (void)
   grub_free (bootpath);
 }
 
-void
-grub_ofdisk_init (void)
-{
-  insert_bootpath ();
-
-  grub_disk_dev_register (&grub_ofdisk_dev);
-}
-
 void
 grub_ofdisk_fini (void)
 {
@@ -568,6 +560,16 @@ grub_ofdisk_fini (void)
   grub_disk_dev_unregister (&grub_ofdisk_dev);
 }
 
+void
+grub_ofdisk_init (void)
+{
+  grub_disk_firmware_fini = grub_ofdisk_fini;
+
+  insert_bootpath ();
+
+  grub_disk_dev_register (&grub_ofdisk_dev);
+}
+
 grub_err_t
 grub_ofdisk_get_block_size (const char *device, grub_uint32_t *block_size)
 {