net: hns3: Constify static structs

A number of static variables were not modified. Make them const to allow
the compiler to put them in read-only memory. In order to do so,
constify a couple of input pointers as well as some local pointers.
This moves about 35Kb to read-only memory as seen by the output of the
size command.

Before:
   text    data     bss     dec     hex filename
 404938  111534     640  517112   7e3f8 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge.ko

After:
   text    data     bss     dec     hex filename
 439499   76974     640  517113   7e3f9 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge.ko

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
index 26f6f06..c643c5a 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
@@ -8,7 +8,7 @@
 #include "hclge_tm.h"
 #include "hnae3.h"
 
-static struct hclge_dbg_reg_type_info hclge_dbg_reg_info[] = {
+static const struct hclge_dbg_reg_type_info hclge_dbg_reg_info[] = {
 	{ .reg_type = "bios common",
 	  .dfx_msg = &hclge_dbg_bios_common_reg[0],
 	  .reg_msg = { .msg_num = ARRAY_SIZE(hclge_dbg_bios_common_reg),
@@ -115,14 +115,14 @@ static int hclge_dbg_cmd_send(struct hclge_dev *hdev,
 }
 
 static void hclge_dbg_dump_reg_common(struct hclge_dev *hdev,
-				      struct hclge_dbg_reg_type_info *reg_info,
+				      const struct hclge_dbg_reg_type_info *reg_info,
 				      const char *cmd_buf)
 {
 #define IDX_OFFSET	1
 
 	const char *s = &cmd_buf[strlen(reg_info->reg_type) + IDX_OFFSET];
-	struct hclge_dbg_dfx_message *dfx_message = reg_info->dfx_msg;
-	struct hclge_dbg_reg_common_msg *reg_msg = &reg_info->reg_msg;
+	const struct hclge_dbg_dfx_message *dfx_message = reg_info->dfx_msg;
+	const struct hclge_dbg_reg_common_msg *reg_msg = &reg_info->reg_msg;
 	struct hclge_desc *desc_src;
 	struct hclge_desc *desc;
 	int entries_per_desc;
@@ -399,7 +399,7 @@ static void hclge_dbg_dump_dcb(struct hclge_dev *hdev, const char *cmd_buf)
 
 static void hclge_dbg_dump_reg_cmd(struct hclge_dev *hdev, const char *cmd_buf)
 {
-	struct hclge_dbg_reg_type_info *reg_info;
+	const struct hclge_dbg_reg_type_info *reg_info;
 	bool has_dump = false;
 	int i;