SUNRPC: Restrict sunrpc client exports

The sunrpc client exports are not meant to be part of any official kernel
API: they can change at the drop of a hat. Mark them as internal functions
using EXPORT_SYMBOL_GPL.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/sysctl.c b/net/sunrpc/sysctl.c
index c879732..bada7de 100644
--- a/net/sunrpc/sysctl.c
+++ b/net/sunrpc/sysctl.c
@@ -23,16 +23,16 @@
  * Declare the debug flags here
  */
 unsigned int	rpc_debug;
-EXPORT_SYMBOL(rpc_debug);
+EXPORT_SYMBOL_GPL(rpc_debug);
 
 unsigned int	nfs_debug;
-EXPORT_SYMBOL(nfs_debug);
+EXPORT_SYMBOL_GPL(nfs_debug);
 
 unsigned int	nfsd_debug;
-EXPORT_SYMBOL(nfsd_debug);
+EXPORT_SYMBOL_GPL(nfsd_debug);
 
 unsigned int	nlm_debug;
-EXPORT_SYMBOL(nlm_debug);
+EXPORT_SYMBOL_GPL(nlm_debug);
 
 #ifdef RPC_DEBUG