staging: lustre: replace cfs_get_random_bytes calls with get_random_byte()

The cfs_get_random_bytes() interface adds nothing of value
to get_random_byte() (which it uses internally).  So just use the
standard interface.
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/include/obd_class.h

@@ -1562,7 +1562,7 @@ int class_procfs_init(void);
 int class_procfs_clean(void);
 
 /* prng.c */
-#define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
+#define ll_generate_random_uuid(uuid_out) get_random_bytes(uuid_out, sizeof(class_uuid_t))
 
 /* statfs_pack.c */
 struct kstatfs;

drivers/staging/lustre/lustre/obdclass/lustre_handles.c

@@ -196,7 +196,7 @@ int class_handle_init(void)
 		spin_lock_init(&bucket->lock);
 	}
 
-	cfs_get_random_bytes(&handle_base, sizeof(handle_base));
+	get_random_bytes(&handle_base, sizeof(handle_base));
 	LASSERT(handle_base != 0ULL);
 
 	return 0;

drivers/staging/lustre/lustre/ptlrpc/client.c

@@ -3067,7 +3067,7 @@ void ptlrpc_init_xid(void)
 
 	spin_lock_init(&ptlrpc_last_xid_lock);
 	if (now < YEAR_2004) {
-		cfs_get_random_bytes(&ptlrpc_last_xid, sizeof(ptlrpc_last_xid));
+		get_random_bytes(&ptlrpc_last_xid, sizeof(ptlrpc_last_xid));
 		ptlrpc_last_xid >>= 2;
 		ptlrpc_last_xid |= (1ULL << 61);
 	} else {