wireless: ath6kl: re-use native helper to parse MAC

There is native mac_pton() function which helps to parse MAC.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath6kl/debug.c

@@ -1240,20 +1240,14 @@ static ssize_t ath6kl_force_roam_write(struct file *file,
 	char buf[20];
 	size_t len;
 	u8 bssid[ETH_ALEN];
-	int i;
-	int addr[ETH_ALEN];
 
 	len = min(count, sizeof(buf) - 1);
 	if (copy_from_user(buf, user_buf, len))
 		return -EFAULT;
 	buf[len] = '\0';
 
-	if (sscanf(buf, "%02x:%02x:%02x:%02x:%02x:%02x",
-		   &addr[0], &addr[1], &addr[2], &addr[3], &addr[4], &addr[5])
-	    != ETH_ALEN)
+	if (!mac_pton(buf, bssid))
 		return -EINVAL;
-	for (i = 0; i < ETH_ALEN; i++)
-		bssid[i] = addr[i];
 
 	ret = ath6kl_wmi_force_roam_cmd(ar->wmi, bssid);
 	if (ret)