ixgbe: declare functions as static

Following patch fixes warnings reported by `make namespacecheck`

Reported by Stephen Hemminger

CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe_mbx.c b/drivers/net/ixgbe/ixgbe_mbx.c
index d75f914..435e028 100644
--- a/drivers/net/ixgbe/ixgbe_mbx.c
+++ b/drivers/net/ixgbe/ixgbe_mbx.c
@@ -200,7 +200,8 @@
  *  returns SUCCESS if it successfully received a message notification and
  *  copied it into the receive buffer.
  **/
-s32 ixgbe_read_posted_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id)
+static s32 ixgbe_read_posted_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size,
+				 u16 mbx_id)
 {
 	struct ixgbe_mbx_info *mbx = &hw->mbx;
 	s32 ret_val = IXGBE_ERR_MBX;
@@ -227,7 +228,7 @@
  *  returns SUCCESS if it successfully copied message into the buffer and
  *  received an ack to that message within delay * timeout period
  **/
-s32 ixgbe_write_posted_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size,
+static s32 ixgbe_write_posted_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size,
                            u16 mbx_id)
 {
 	struct ixgbe_mbx_info *mbx = &hw->mbx;
@@ -247,20 +248,6 @@
 	return ret_val;
 }
 
-/**
- *  ixgbe_init_mbx_ops_generic - Initialize MB function pointers
- *  @hw: pointer to the HW structure
- *
- *  Setup the mailbox read and write message function pointers
- **/
-void ixgbe_init_mbx_ops_generic(struct ixgbe_hw *hw)
-{
-	struct ixgbe_mbx_info *mbx = &hw->mbx;
-
-	mbx->ops.read_posted = ixgbe_read_posted_mbx;
-	mbx->ops.write_posted = ixgbe_write_posted_mbx;
-}
-
 static s32 ixgbe_check_for_bit_pf(struct ixgbe_hw *hw, u32 mask, s32 index)
 {
 	u32 mbvficr = IXGBE_READ_REG(hw, IXGBE_MBVFICR(index));