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/airo.c b/drivers/net/wireless/airo.c
index 80ae759..7d717c4 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -7578,9 +7578,9 @@
 
 static const struct iw_handler_def	airo_handler_def =
 {
-	.num_standard	= sizeof(airo_handler)/sizeof(iw_handler),
-	.num_private	= sizeof(airo_private_handler)/sizeof(iw_handler),
-	.num_private_args = sizeof(airo_private_args)/sizeof(struct iw_priv_args),
+	.num_standard	= ARRAY_SIZE(airo_handler),
+	.num_private	= ARRAY_SIZE(airo_private_handler),
+	.num_private_args = ARRAY_SIZE(airo_private_args),
 	.standard	= airo_handler,
 	.private	= airo_private_handler,
 	.private_args	= airo_private_args,