net: hns3: fix code review comments

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

This patch adds const definition for unchanged input function
parameter.

Feature or Bugfix:Bugfix
Signed-off-by: Nshenjian (K) <shenjian15@huawei.com>
Reviewed-by: Nlipeng <lipeng321@huawei.com>
Reviewed-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c

@@ -659,7 +659,7 @@ static int hns3_get_link_ksettings(struct net_device *netdev,
 	return 0;
 }
 
-static int hns3_check_ksettings_param(struct net_device *netdev,
+static int hns3_check_ksettings_param(const struct net_device *netdev,
 				      const struct ethtool_link_ksettings *cmd)
 {
 	struct hnae3_handle *handle = hns3_get_handle(netdev);