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/arm/dts/r8a7793-u-boot.dtsi b/arch/arm/dts/r8a7793-u-boot.dtsi
index 4858b17..fb94746 100644
--- a/arch/arm/dts/r8a7793-u-boot.dtsi
+++ b/arch/arm/dts/r8a7793-u-boot.dtsi
@@ -8,13 +8,13 @@
 #include "r8a779x-u-boot.dtsi"
 
 &usb_extal_clk {
-	u-boot,dm-pre-reloc;
+	bootph-all;
 };
 
 &pfc {
-	u-boot,dm-pre-reloc;
+	bootph-all;
 };
 
 &rst {
-	u-boot,dm-pre-reloc;
+	bootph-all;
 };