ARMv4: Add a minimal version of cpu.h.

All this version does is define asmlinkage to be nothing. It's required by the
threading header file which is brought in by the timer implementation which I
think is the hook for thread switching.

BUG=None
TEST=Built with Ron's patch which adds some clock functions and saw the
compile error go away.
BRANCH=None

Change-Id: Id57261d7c2c5ff8be00b0ad71bf7aaa9f3e24c1d
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/171801
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
diff --git a/src/arch/arm/include/armv4/arch/cpu.h b/src/arch/arm/include/armv4/arch/cpu.h
new file mode 100644
index 0000000..48f913e
--- /dev/null
+++ b/src/arch/arm/include/armv4/arch/cpu.h
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2012 Google Inc.
+ *
+ * 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
+ */
+
+#ifndef __ARCH_CPU_H__
+#define __ARCH_CPU_H__
+
+#define asmlinkage
+
+#endif /* __ARCH_CPU_H__ */