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/stm32mp135f-dk-u-boot.dtsi b/arch/arm/dts/stm32mp135f-dk-u-boot.dtsi
index cbe4eb5..48605ff 100644
--- a/arch/arm/dts/stm32mp135f-dk-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp135f-dk-u-boot.dtsi
@@ -26,15 +26,15 @@
 };
 
 &uart4 {
-	u-boot,dm-pre-reloc;
+	bootph-all;
 };
 
 &uart4_pins_a {
-	u-boot,dm-pre-reloc;
+	bootph-all;
 	pins1 {
-		u-boot,dm-pre-reloc;
+		bootph-all;
 	};
 	pins2 {
-		u-boot,dm-pre-reloc;
+		bootph-all;
 	};
 };