sctp: move global declaration to header file.

sctp_chunk_cachep & sctp_bucket_cachep is used module global, so move it
to a header file.

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>

include/net/sctp/sctp.h

@@ -189,6 +189,16 @@ int sctp_assocs_proc_init(void);
 void sctp_assocs_proc_exit(void);
 
 
+/*
+ * Module global variables
+ */
+
+ /*
+  * sctp/protocol.c
+  */
+extern struct kmem_cache *sctp_chunk_cachep __read_mostly;
+extern struct kmem_cache *sctp_bucket_cachep __read_mostly;
+
 /*
  *  Section:  Macros, externs, and inlines
  */