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/sandbox/dts/sandbox64.dts b/arch/sandbox/dts/sandbox64.dts
index a9cd790..f21fc18 100644
--- a/arch/sandbox/dts/sandbox64.dts
+++ b/arch/sandbox/dts/sandbox64.dts
@@ -46,7 +46,7 @@
 	/* ... */
 	cros_ec: cros-ec {
 		reg = <0 0 0 0>;
-		u-boot,dm-pre-reloc;
+		bootph-all;
 		compatible = "google,cros-ec-sandbox";
 	};
 
@@ -81,7 +81,7 @@
 	};
 
 	spi: spi@0 {
-		u-boot,dm-pre-reloc;
+		bootph-all;
 		#address-cells = <1>;
 		#size-cells = <0>;
 		reg = <0 0 0 0>;