igb: constify e1000_phy_operations structure

---
 drivers/net/ethernet/intel/igb/e1000_82575.c | 2 +-
 drivers/net/ethernet/intel/igb/e1000_hw.h    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
 
diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c
index 9a1a9c7..a23aa67 100644
--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.c
@@ -2920,7 +2920,7 @@ static struct e1000_mac_operations e1000_mac_ops_82575 = {
 #endif
 };
 
-static struct e1000_phy_operations e1000_phy_ops_82575 = {
+static const struct e1000_phy_operations e1000_phy_ops_82575 = {
 	.acquire              = igb_acquire_phy_82575,
 	.get_cfg_done         = igb_get_cfg_done_82575,
 	.release              = igb_release_phy_82575,
diff --git a/drivers/net/ethernet/intel/igb/e1000_hw.h b/drivers/net/ethernet/intel/igb/e1000_hw.h
index f0c416e..2fb2213 100644
--- a/drivers/net/ethernet/intel/igb/e1000_hw.h
+++ b/drivers/net/ethernet/intel/igb/e1000_hw.h
@@ -372,7 +372,7 @@ struct e1000_thermal_sensor_data {
 struct e1000_info {
 	s32 (*get_invariants)(struct e1000_hw *);
 	struct e1000_mac_operations *mac_ops;
-	struct e1000_phy_operations *phy_ops;
+	const struct e1000_phy_operations *phy_ops;
 	struct e1000_nvm_operations *nvm_ops;
 };