the only place that needs to include asm/exec.h is linux/binfmts.h

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 366422b..8938bea 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -19,6 +19,7 @@
 
 #ifdef __KERNEL__
 #include <linux/sched.h>
+#include <asm/exec.h>
 
 #define CORENAME_MAX_SIZE 128