ixgbe: fix static functions

Define functions as static added C=1 (sparse) to my make line
brought these to my attention.

Signed-off-by: John Fastabend <[e-mail]>
Signed-off-by: Jeff Kirsher <[e-mail]>

drivers/net/ixgbe/ixgbe_82599.c

···
  *
  *  Set the link speed in the AUTOC register and restarts link.
  **/
-s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
+static s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
                                           ixgbe_link_speed speed,
                                           bool autoneg,
                                           bool autoneg_wait_to_complete)

drivers/net/ixgbe/ixgbe_dcb_82598.c

···
  * Configure queue statistics registers, all queues belonging to same traffic
  * class uses a single set of queue statistics counters.
  */
-s32 ixgbe_dcb_config_tc_stats_82598(struct ixgbe_hw *hw)
+static s32 ixgbe_dcb_config_tc_stats_82598(struct ixgbe_hw *hw)
 {
 	u32 reg = 0;
 	u8  i   = 0;

drivers/net/ixgbe/ixgbe_main.c

···
 #ifdef CONFIG_IXGBE_DCB
 
 /* ixgbe_get_first_reg_idx - Return first register index associated with ring */
-void ixgbe_get_first_reg_idx(struct ixgbe_adapter *adapter, u8 tc,
-			     unsigned int *tx, unsigned int *rx)
+static void ixgbe_get_first_reg_idx(struct ixgbe_adapter *adapter, u8 tc,
+				    unsigned int *tx, unsigned int *rx)
 {
 	struct net_device *dev = adapter->netdev;
 	struct ixgbe_hw *hw = &adapter->hw;

drivers/net/ixgbe/ixgbe_sriov.c

···
 	return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
 }
 
-void ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf)
+static void ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
 	int new_mtu = msgbuf[1];