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/mips/dts/qca953x.dtsi b/arch/mips/dts/qca953x.dtsi
index 90d34dd..148de76 100644
--- a/arch/mips/dts/qca953x.dtsi
+++ b/arch/mips/dts/qca953x.dtsi
@@ -35,7 +35,7 @@
 	};
 
 	pinctrl {
-		u-boot,dm-pre-reloc;
+		bootph-all;
 		compatible = "qca,qca953x-pinctrl";
 		ranges;
 		#address-cells = <1>;