Split arch_align_stack() out from asm-generic/system.h

Split arch_align_stack() out from asm-generic/system.h into its own header of
asm-generic/exec.h as part of the asm/system.h disintegration.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

include/asm-generic/exec.h

+/* Generic process execution definitions, based on MN10300 definitions.
+ *
+ * It should be possible to use these on really simple architectures,
+ * but it serves more as a starting point for new ports.
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef __ASM_GENERIC_EXEC_H
+#define __ASM_GENERIC_EXEC_H
+
+#define arch_align_stack(x) (x)
+
+#endif /* __ASM_GENERIC_EXEC_H */

include/asm-generic/system.h

-/* Generic system definitions, based on MN10300 definitions.
- *
- * It should be possible to use these on really simple architectures,
- * but it serves more as a starting point for new ports.
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-#ifndef __ASM_GENERIC_SYSTEM_H
-#define __ASM_GENERIC_SYSTEM_H
-
+/* FILE TO BE DELETED. DO NOT ADD STUFF HERE! */
 #include <asm/barrier.h>
 #include <asm/cmpxchg.h>
+#include <asm/exec.h>
 #include <asm/switch_to.h>
-
-#define arch_align_stack(x) (x)
-
-#endif /* __ASM_GENERIC_SYSTEM_H */