New platform: TI cc2530 Development Kit

This commits adds support for TI's SmartRF05 Eval. Board with cc2530 EMs
Some initial support for cc2531 USB dongles

cpu/cc253x/mtarch.h

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2010, Loughborough University - Computer Science
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+ /*
+  * \file
+  * 	Stub header file for multi-threading. It doesn't do anything, it
+  * 	just exists so that mt.c can compile cleanly.
+  *
+  * 	This is based on the original mtarch.h for z80 by Takahide Matsutsuka
+  * 
+  * \author
+  *	  George Oikonomou - <oikonomou@users.sourceforge.net>
+  */
+#ifndef __MTARCH_H__
+#define __MTARCH_H__
+
+struct mtarch_thread {
+  unsigned char *sp;
+};
+
+#endif /* __MTARCH_H__ */
+