boot: Drop size parameter from image_setup_libfdt()

The of_size parameter is not used, so remove it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

cmd/bootefi.c

@@ -309,7 +309,7 @@ efi_status_t efi_install_fdt(void *fdt)
 		return EFI_OUT_OF_RESOURCES;
 	}
 
-	if (image_setup_libfdt(&img, fdt, 0, NULL)) {
+	if (image_setup_libfdt(&img, fdt, NULL)) {
 		log_err("ERROR: failed to process device tree\n");
 		return EFI_LOAD_ERROR;
 	}