net: pcs: xpcs: rename xpcs_config_usxgmii()

xpcs_config_usxgmii() is only called from the xpcs_link_up() method, so
let's name it similarly to the SGMII and 1000BASEX functions.

Signed-off-by: Russell King (Oracle) <[e-mail]>
Tested-by: Serge Semin <[e-mail]>
Signed-off-by: Paolo Abeni <[e-mail]>

drivers/net/pcs/pcs-xpcs.c

···
 	return 0;
 }
 
-static void xpcs_config_usxgmii(struct dw_xpcs *xpcs, int speed)
+static void xpcs_link_up_usxgmii(struct dw_xpcs *xpcs, int speed)
 {
 	int ret, speed_sel;
 
···
 	struct dw_xpcs *xpcs = phylink_pcs_to_xpcs(pcs);
 
 	if (interface == PHY_INTERFACE_MODE_USXGMII)
-		return xpcs_config_usxgmii(xpcs, speed);
+		return xpcs_link_up_usxgmii(xpcs, speed);
 
 	if (interface == PHY_INTERFACE_MODE_SGMII ||
 	    interface == PHY_INTERFACE_MODE_1000BASEX)