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/hi6220-hikey-u-boot.dtsi b/arch/arm/dts/hi6220-hikey-u-boot.dtsi
index 3113983..fcfcb37 100644
--- a/arch/arm/dts/hi6220-hikey-u-boot.dtsi
+++ b/arch/arm/dts/hi6220-hikey-u-boot.dtsi
@@ -6,9 +6,9 @@
  */
 
 &mmc0 {
-	u-boot,dm-pre-reloc;
+	bootph-all;
 };
 
 &mmc1 {
-	u-boot,dm-pre-reloc;
+	bootph-all;
 };