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/dra72-evm-revc-u-boot.dtsi b/arch/arm/dts/dra72-evm-revc-u-boot.dtsi
index 40443da..f13eadf 100644
--- a/arch/arm/dts/dra72-evm-revc-u-boot.dtsi
+++ b/arch/arm/dts/dra72-evm-revc-u-boot.dtsi
@@ -23,42 +23,42 @@
 };
 
 &mmc2_pins_default {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 };
 
 &mmc2_pins_hs {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 };
 
 &mmc2_pins_ddr_rev20 {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 };
 
 &mmc2_iodelay_ddr_conf {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 };
 
 &mmc2_pins_hs200 {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 };
 
 &mmc2_iodelay_hs200_rev20_conf {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 };
 
 &omap_dwc3_1 {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 };
 
 &usb1 {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 	dr_mode = "peripheral";
 };
 
 &usb2_phy1 {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 };
 
 &usb3_phy1 {
-	u-boot,dm-spl;
+	bootph-pre-ram;
 };