board: ge: ppd: Enable CONFIG_DM

Add simplified, generalised, ppd device tree and enable CONFIG_DM.

Signed-off-by: Ian Ray <ian.ray@ge.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 93559a3..acab1d3 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -700,6 +700,7 @@
 	mt7629-rfb.dtb
 
 dtb-$(CONFIG_TARGET_GE_BX50V3) += imx6q-bx50v3.dtb
+dtb-$(CONFIG_TARGET_MX53PPD) += imx53-ppd.dtb
 
 targets += $(dtb-y)