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/arc/dts/nsim.dts b/arch/arc/dts/nsim.dts
index c2899ef..2d3a7ec 100644
--- a/arch/arc/dts/nsim.dts
+++ b/arch/arc/dts/nsim.dts
@@ -18,7 +18,7 @@
 			#clock-cells = <0>;
 			compatible = "fixed-clock";
 			clock-frequency = <70000000>;
-			u-boot,dm-pre-reloc;
+			bootph-all;
 		};
 	};