ARM: dts: am335x-boneblack-iot-cape: add custom device tree

* This device tree enables various HW interfaces such as SPI

Signed-off-by: Jacob Stiffler <j-stiffler@ti.com>

arch/arm/boot/dts/am335x-boneblack-iot-cape.dts

@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "am335x-boneblack.dts"
+#include "am335x-boneblack-spi0.dtsi"
+
+/ {
+	model = "TI AM335x BeagleBone Black for LPRF";
+	compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+};