Add Tegra2 SPI controller.

hwaccess.h

 /*
  * This file is part of the flashrom project.
  *
  * Copyright (C) 2009 Carl-Daniel Hailfinger
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
 /*
  * Header file for hardware access and OS abstraction. Included from flash.h.
  */
 
 #ifndef __HWACCESS_H__
 #define __HWACCESS_H__ 1
 
-#if defined (__i386__) || defined (__x86_64__)
+#if defined (__i386__) || defined (__x86_64__) || defined(__arm__)
 #if defined(__GLIBC__)
 #include <sys/io.h>
 #endif
 #endif
 
 #if NEED_PCI == 1
 /*
  * libpci headers use the variable name "index" which triggers shadowing
  * warnings on systems which have the index() function in a default #include
  * or as builtin.
@@ skipping 281 matching lines @@
 #endif
 
 #elif defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || defined(__ppc64__)
 
 /* PCI port I/O is not yet implemented on PowerPC. */
 
 #elif defined (__mips) || defined (__mips__) || defined (_mips) || defined (mips)
 
 /* PCI port I/O is not yet implemented on MIPS. */
 
+#elif defined(__arm__)
+
+/* Non memory mapped I/O is not supported on ARM. */
+
 #else
 
 #error Unknown architecture, please check if it supports PCI port IO.
 
 #endif
 #endif
 
 #endif /* !__HWACCESS_H__ */