net: mdiobus: Convert to use fwnode_device_is_compatible()

Replace open coded fwnode_device_is_compatible() in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/mdio/fwnode_mdio.c

@@ -115,7 +115,7 @@ int fwnode_mdiobus_register_phy(struct mii_bus *bus,
 	struct mii_timestamper *mii_ts = NULL;
 	struct pse_control *psec = NULL;
 	struct phy_device *phy;
-	bool is_c45 = false;
+	bool is_c45;
 	u32 phy_id;
 	int rc;
 
@@ -129,11 +129,7 @@ int fwnode_mdiobus_register_phy(struct mii_bus *bus,
 		goto clean_pse;
 	}
 
-	rc = fwnode_property_match_string(child, "compatible",
-					  "ethernet-phy-ieee802.3-c45");
-	if (rc >= 0)
-		is_c45 = true;
-
+	is_c45 = fwnode_device_is_compatible(child, "ethernet-phy-ieee802.3-c45");
 	if (is_c45 || fwnode_get_phy_id(child, &phy_id))
 		phy = get_phy_device(bus, addr, is_c45);
 	else