fdt: adjust bcm283x device tree for u-boot

The information currently set via platdata has to be represented in the
device tree now. bcm283x-uboot.dtsi adds the u-boot specific "skip-init"
property to the serial nodes and enables initialization in the pre-reloc phase.

Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Signed-off-by: Fabian Vogt <fvogt@suse.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/arm/dts/bcm283x-uboot.dtsi

@@ -0,0 +1,22 @@
+/*
+ * U-Boot addition to keep baudrate set by firmware
+ * and also initialize before relocation.
+ *
+ * (C) Copyright 2016 Fabian Vogt <fvogt@suse.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+&soc {
+	u-boot,dm-pre-reloc;
+};
+
+&uart0 {
+	skip-init;
+	u-boot,dm-pre-reloc;
+};
+
+&uart1 {
+	skip-init;
+	u-boot,dm-pre-reloc;
+};

arch/arm/dts/bcm283x.dtsi

@@ -19,7 +19,7 @@
 		bootargs = "earlyprintk console=ttyAMA0";
 	};
 
-	soc {
+	soc: soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -319,3 +319,5 @@
 
 	};
 };
+
+#include "bcm283x-uboot.dtsi"