SUNRPC: Fix rpc_sockaddr2uaddr

rpc_sockaddr2uaddr is only used by net/sunrpc/rpcb_clnt.c, where
it is used in a non-blockable context in at least one case.

Add non-blocking capability by adding a gfp_t argument

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index db7bcaf..d926fd1 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -9,6 +9,7 @@
 #ifndef _LINUX_SUNRPC_CLNT_H
 #define _LINUX_SUNRPC_CLNT_H
 
+#include <linux/types.h>
 #include <linux/socket.h>
 #include <linux/in.h>
 #include <linux/in6.h>
@@ -161,7 +162,7 @@
 size_t		rpc_ntop(const struct sockaddr *, char *, const size_t);
 size_t		rpc_pton(const char *, const size_t,
 			 struct sockaddr *, const size_t);
-char *		rpc_sockaddr2uaddr(const struct sockaddr *);
+char *		rpc_sockaddr2uaddr(const struct sockaddr *, gfp_t);
 size_t		rpc_uaddr2sockaddr(const char *, const size_t,
 				   struct sockaddr *, const size_t);