cmd/fs: fix build if CMD_BOOTEFI is not set

Fixes:
cmd/fs.c:29: undefined reference to `efi_set_bootdev'

Signed-off-by: Francois Gervais <fgervais@distech-controls.com>

cmd/fs.c

@@ -26,8 +26,10 @@ U_BOOT_CMD(
 static int do_load_wrapper(cmd_tbl_t *cmdtp, int flag, int argc,
 				char * const argv[])
 {
+#ifdef CONFIG_CMD_BOOTEFI
 	efi_set_bootdev(argv[1], (argc > 2) ? argv[2] : "",
 			(argc > 4) ? argv[4] : "");
+#endif
 	return do_load(cmdtp, flag, argc, argv, FS_TYPE_ANY);
 }