ARM: dts: am3517-evm: Split off SOM features from baseboard

The am3517-evm consists of an am3517 SOM-M2 and a baseboard.
As items are added that are unique to the baseboard, let's place
them in a file called am3517-som.dtsi.  These items will be
common for all variants of the SOM.

Anything unique to the baseboard will be placed into
am3517-evm.
Signed-off-by: NDerald D. Woods <woods.technical@gmail.com>
Signed-off-by: NAdam Ford <aford173@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am3517-evm.dts

@@ -8,7 +8,7 @@
 /dts-v1/;
 
 #include "am3517.dtsi"
-
+#include "am3517-som.dtsi"
 / {
 	model = "TI AM3517 EVM (AM3517/05 TMDSEVM3517)";
 	compatible = "ti,am3517-evm", "ti,am3517", "ti,omap3";

arch/arm/boot/dts/am3517-som.dtsi

+/*
+ * Copyright (C) 2016 Derald D. Woods <woods.technical@gmail.com>
+ *
+ * Based on am3517-evm.dts
+ *
+ * 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.
+ */
+
+&gpmc {
+	ranges = <0 0 0x30000000 0x1000000>;	/* CS0: 16MB for NAND */
+
+	nand@0,0 {
+		compatible = "ti,omap2-nand";
+		linux,mtd-name = "micron,mt29f4g16abchch";
+		reg = <0 0 4>; /* CS0, offset 0, IO size 4 */
+		nand-bus-width = <16>;
+		ti,nand-ecc-opt = "bch8";
+		gpmc,sync-clk-ps = <0>;
+		gpmc,cs-on-ns = <0>;
+		gpmc,cs-rd-off-ns = <44>;
+		gpmc,cs-wr-off-ns = <44>;
+		gpmc,adv-on-ns = <6>;
+		gpmc,adv-rd-off-ns = <34>;
+		gpmc,adv-wr-off-ns = <44>;
+		gpmc,we-off-ns = <40>;
+		gpmc,oe-off-ns = <54>;
+		gpmc,access-ns = <64>;
+		gpmc,rd-cycle-ns = <82>;
+		gpmc,wr-cycle-ns = <82>;
+		gpmc,wr-access-ns = <40>;
+		gpmc,wr-data-mux-bus-ns = <0>;
+		gpmc,device-width = <2>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+	};
+};