board: ge: mx53ppd: use imx wdt

Enable DM imx WDT
Enable SYSRESET_WATCHDOG to maintain WDT based reset ability

Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
diff --git a/arch/arm/dts/imx53-ppd.dts b/arch/arm/dts/imx53-ppd.dts
index 8f38649..ae98361 100644
--- a/arch/arm/dts/imx53-ppd.dts
+++ b/arch/arm/dts/imx53-ppd.dts
@@ -43,6 +43,7 @@
 /dts-v1/;
 
 #include "imx53.dtsi"
+#include "imx53-ppd-uboot.dtsi"
 #include <dt-bindings/input/input.h>
 
 / {