net: hns3: Optimization of some variable types

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

Add keyword const in hclge_dbg_dump_reg_cmd() parameter of char* to
remove the static check warning.

Feature or Bugfix:Bugfix
Signed-off-by: Nmoyufeng <moyufeng@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/hns3pf/hclge_debugfs.c

@@ -219,7 +219,7 @@ static void hclge_dbg_dump_dcb(struct hclge_dev *hdev, const char *cmd_buf)
 	dev_info(dev, "IGU_TX_PRI_MAP_TC_CFG: 0x%x\n", desc[0].data[5]);
 }
 
-static void hclge_dbg_dump_reg_cmd(struct hclge_dev *hdev, char *cmd_buf)
+static void hclge_dbg_dump_reg_cmd(struct hclge_dev *hdev, const char *cmd_buf)
 {
 	int msg_num;