staging: wilc1000: Modification in code to use ARRAY_SIZE macro

In this patch, ARRAY_SIZE() macro is used to determine the
size. This change was detected with the help of coccinelle
tool.
Signed-off-by: Chaitanya Dhere <cvijaydh@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/linux_wlan.c

@@ -1737,7 +1737,7 @@ static int linux_wlan_read_mac_addr(void *vp)
 	mm_segment_t old_fs;
 	loff_t pos = 0;
 	int index;
-	int array_size = sizeof(path_string) / sizeof(path_string[0]);
+	int array_size = ARRAY_SIZE(path_string);
 
 	/* change to KERNEL_DS address limit */
 	old_fs = get_fs();