nfs: offer native ioctls even if CONFIG_COMPAT is set

Without this for example 64-bit binaries on typical amd64 distributions
would not be able to use ioctls on NFS.  For now this only affects clones.
Additionally ->compat_ioctl is defined even for non-compat builds, so
get rid of the pointless ifdef.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>

fs/nfs/nfs4file.c

@@ -347,9 +347,6 @@ const struct file_operations nfs4_file_operations = {
 #endif /* CONFIG_NFS_V4_2 */
 	.check_flags	= nfs_check_flags,
 	.setlease	= simple_nosetlease,
-#ifdef CONFIG_COMPAT
 	.unlocked_ioctl = nfs4_ioctl,
-#else
 	.compat_ioctl	= nfs4_ioctl,
-#endif /* CONFIG_COMPAT */
 };