drivers/net/: all drivers/net/ cleanup with ARRAY_SIZE

Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/wireless/hostap/hostap_ioctl.c b/drivers/net/wireless/hostap/hostap_ioctl.c
index d58ac84..730b354 100644
--- a/drivers/net/wireless/hostap/hostap_ioctl.c
+++ b/drivers/net/wireless/hostap/hostap_ioctl.c
@@ -3976,9 +3976,9 @@
 
 const struct iw_handler_def hostap_iw_handler_def =
 {
-	.num_standard	= sizeof(prism2_handler) / sizeof(iw_handler),
-	.num_private	= sizeof(prism2_private_handler) / sizeof(iw_handler),
-	.num_private_args = sizeof(prism2_priv) / sizeof(struct iw_priv_args),
+	.num_standard	= ARRAY_SIZE(prism2_handler),
+	.num_private	= ARRAY_SIZE(prism2_private_handler),
+	.num_private_args = ARRAY_SIZE(prism2_priv),
 	.standard	= (iw_handler *) prism2_handler,
 	.private	= (iw_handler *) prism2_private_handler,
 	.private_args	= (struct iw_priv_args *) prism2_priv,