drivers: Push down BKL into various drivers

These are the last remaining device drivers using
the ->ioctl file operation in the drivers directory
(except from v4l drivers).

[fweisbec: drop i8k pushdown as it has been done from
procfs pushdown branch already]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
diff --git a/drivers/macintosh/nvram.c b/drivers/macintosh/nvram.c
index c876349..a271c82 100644
--- a/drivers/macintosh/nvram.c
+++ b/drivers/macintosh/nvram.c
@@ -100,7 +100,7 @@
 	.llseek		= nvram_llseek,
 	.read		= read_nvram,
 	.write		= write_nvram,
-	.ioctl		= nvram_ioctl,
+	.unlocked_ioctl	= nvram_ioctl,
 };
 
 static struct miscdevice nvram_dev = {