cxgb4: make function 'cxgb4_mqprio_free_hw_resources' static

Fix sparse warnings:

drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_mqprio.c:242:6: warning: symbol 'cxgb4_mqprio_free_hw_resources' was not declared. Should it be static?

Reported-by: Hulk Robot <[email protected]>
Fixes: 2d0cb84 ("cxgb4: add ETHOFLD hardware queue support")
Signed-off-by: zhengbin <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: zhengbin13

drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_mqprio.c

@@ -239,7 +239,7 @@ static int cxgb4_mqprio_alloc_hw_resources(struct net_device *dev)
 	return ret;
 }
 
-void cxgb4_mqprio_free_hw_resources(struct net_device *dev)
+static void cxgb4_mqprio_free_hw_resources(struct net_device *dev)
 {
 	struct port_info *pi = netdev2pinfo(dev);
 	struct adapter *adap = netdev2adap(dev);