[CIFS] Reserve upcall IDX value for CIFS with connector header and add
Kconfig option for CIFS upcall.

Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 450ab75..2cb6207 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -42,6 +42,7 @@
 #include "ntlmssp.h"
 #include "nterr.h"
 #include "rfc1002pdu.h"
+#include "cn_cifs.h"
 
 #define CIFS_PORT 445
 #define RFC1001_PORT 139