ARM: mvebu: add support for Allied Telesis x530

This is a range of stackable network switches. The SoC is Armada-385 and
there are a number of variants with differing network port
configurations. The DP variants are intended for a harsher operating
environment so they use a different i2c mux and fit industrial-temp
parts.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/dts/armada-385-atl-x530-u-boot.dtsi b/arch/arm/dts/armada-385-atl-x530-u-boot.dtsi
new file mode 100644
index 0000000..7074a73
--- /dev/null
+++ b/arch/arm/dts/armada-385-atl-x530-u-boot.dtsi
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+
+&spi1 {
+	u-boot,dm-pre-reloc;
+
+	spi-flash@0 {
+		u-boot,dm-pre-reloc;
+	};
+};
+
+&uart0 {
+	u-boot,dm-pre-reloc;
+};