e1000e: rename e1000e_config_collision_dist() and call as function pointer

Rename e1000e_config_collision_dist() to
e1000e_config_collision_dist_generic() to signify the function is used for
more than one MAC-family type, and set and use it as a MAC ops function
pointer to be consistent with the driver design.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 3975ed1..56c1aec 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -2855,7 +2855,7 @@
 	/* enable Report Status bit */
 	adapter->txd_cmd |= E1000_TXD_CMD_RS;
 
-	e1000e_config_collision_dist(hw);
+	hw->mac.ops.config_collision_dist(hw);
 }
 
 /**