drivers/net/ixgbe: fix sparse warning: Should it be static?

Impact: Make symbol static.

Fix this sparse warning:
  drivers/net/ixgbe/ixgbe_82598.c:59:5: warning: symbol 'ixgbe_get_pcie_msix_count_82598' was not declared. Should it be static?
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ixgbe/ixgbe_82598.c

@@ -56,7 +56,7 @@ static s32 ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw *hw, u8 byte_offset,
  *  Read PCIe configuration space, and get the MSI-X vector count from
  *  the capabilities table.
  **/
-u16 ixgbe_get_pcie_msix_count_82598(struct ixgbe_hw *hw)
+static u16 ixgbe_get_pcie_msix_count_82598(struct ixgbe_hw *hw)
 {
 	struct ixgbe_adapter *adapter = hw->back;
 	u16 msix_count;