ARM: imx: m53menlo: Convert WDT support to DM

Enable DM Watchdog support on iMX53 M53Menlo.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/include/configs/m53menlo.h b/include/configs/m53menlo.h
index 7b68c1c..e98dbfb 100644
--- a/include/configs/m53menlo.h
+++ b/include/configs/m53menlo.h
@@ -242,4 +242,9 @@
 		"fi ; "							\
 		"fi\0"
 
+#if defined(CONFIG_SPL_BUILD)
+#undef CONFIG_WATCHDOG
+#define CONFIG_HW_WATCHDOG
+#endif
+
 #endif	/* __M53MENLO_CONFIG_H__ */