dm: dts: Convert driver model tags to use new schema

Now that Linux has accepted these tags, move the device tree files in
U-Boot over to use them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/m68k/dts/M53017EVB.dts b/arch/m68k/dts/M53017EVB.dts
index 401318d..31c50b6 100644
--- a/arch/m68k/dts/M53017EVB.dts
+++ b/arch/m68k/dts/M53017EVB.dts
@@ -16,7 +16,7 @@
 };
 
 &uart0 {
-	u-boot,dm-pre-reloc;
+	bootph-all;
 	status = "okay";
 };