arm: dts: da850: Migrate da850-evm DTS files from Linux 4.13-RC5

A few small additional items are needed to support DM_SPI and
DM_SERIAL, so those were added to da850-evm-u-boot.dtsi

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/arch/arm/dts/da850-evm-u-boot.dtsi b/arch/arm/dts/da850-evm-u-boot.dtsi
new file mode 100644
index 0000000..5cca47d
--- /dev/null
+++ b/arch/arm/dts/da850-evm-u-boot.dtsi
@@ -0,0 +1,22 @@
+/*
+ * da850-evm U-Boot Additions
+ *
+ * Copyright (C) 2017 Logic PD, Inc.
+ * Copyright (C) Adam Ford
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/ {
+	chosen {
+		stdout-path = &serial2;
+	};
+
+	aliases {
+		spi0 = &spi1;
+	};
+};
+
+&flash {
+	compatible = "m25p64", "spi-flash";
+};