arm: Add device trees for TI-Nspire hardware

This patch adds device trees for describing the TI-Nspire hardware.

Changes between v1 and v2:
* Change "keymap" binding to the standard "linux,keymap" binding.

Signed-off-by: Daniel Tang <dt.tangr@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 6931c43..b27b057 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -31,6 +31,7 @@
 img	Imagination Technologies Ltd.
 intercontrol	Inter Control Group
 linux	Linux-specific binding
+lsi	LSI Corp. (LSI Logic)
 marvell	Marvell Technology Group Ltd.
 maxim	Maxim Integrated Products
 mosaixtech	Mosaix Technologies, Inc.