Sanitise linux/audit.h for userspace consumption, split elf-em.h from elf.h

Don't include <linux/sched.h> outside __KERNEL__, and split the EM_xxx
definitions out of elf.h into elf-em.h so that audit.h can include just
that and not pollute the namespace any further than it needs to.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 1c47c59..3199755 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -24,8 +24,7 @@
 #ifndef _LINUX_AUDIT_H_
 #define _LINUX_AUDIT_H_
 
-#include <linux/sched.h>
-#include <linux/elf.h>
+#include <linux/elf-em.h>
 
 /* The netlink messages for the audit system is divided into blocks:
  * 1000 - 1099 are for commanding the audit system
@@ -267,6 +266,7 @@
 };
 
 #ifdef __KERNEL__
+#include <linux/sched.h>
 
 struct audit_sig_info {
 	uid_t		uid;