dm: cmd: Relocate subcommands when MANUAL_RELOC

Subcommands contain pointers to functions which are not updated when
MANUAL_RELOC is enabled. This patch fix it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/cmd_dm.c b/test/dm/cmd_dm.c
index caff49a..b6e7109 100644
--- a/test/dm/cmd_dm.c
+++ b/test/dm/cmd_dm.c
@@ -46,11 +46,25 @@
 	U_BOOT_CMD_MKENT(devres, 1, 1, do_dm_dump_devres, "", ""),
 };
 
+static __maybe_unused void dm_reloc(void)
+{
+	static int relocated;
+
+	if (!relocated) {
+		fixup_cmdtable(test_commands, ARRAY_SIZE(test_commands));
+		relocated = 1;
+	}
+}
+
 static int do_dm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	cmd_tbl_t *test_cmd;
 	int ret;
 
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+	dm_reloc();
+#endif
+
 	if (argc < 2)
 		return CMD_RET_USAGE;
 	test_cmd = find_cmd_tbl(argv[1], test_commands,