NFS: Initialize the NFS v4 client from init_nfs_v4()

And split these functions out of the generic client into a v4 specific
file.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/Makefile b/fs/nfs/Makefile
index ec13afe..0b96c203 100644
--- a/fs/nfs/Makefile
+++ b/fs/nfs/Makefile
@@ -15,7 +15,7 @@
 nfs-$(CONFIG_NFS_V4)	+= nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
 			   nfs4super.o nfs4file.o delegation.o idmap.o \
 			   callback.o callback_xdr.o callback_proc.o \
-			   nfs4namespace.o nfs4getroot.o
+			   nfs4namespace.o nfs4getroot.o nfs4client.o
 nfs-$(CONFIG_NFS_V4_1)	+= pnfs.o pnfs_dev.o
 
 ifeq ($(CONFIG_SYSCTL), y)