loader: Drop argv[] argument in grub_initrd_load()

In the case of an error grub_initrd_load() uses argv[] to print the
filename that caused the error. It is also possible to obtain the
filename from the file handles and there is no need to duplicate that
information in argv[], so let's drop it.

Signed-off-by: Nikita Ermakov <arei@altlinux.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Backport-commit: also for mips64
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

GRUB2/MOD_SRC/grub-2.04/include/grub/linux.h

@@ -21,4 +21,4 @@ grub_initrd_close (struct grub_linux_initrd_context *initrd_ctx);
 
 grub_err_t
 grub_initrd_load (struct grub_linux_initrd_context *initrd_ctx,
-		  char *argv[], void *target);
+		  void *target);