[fix] after phyid addition, the init function should init correct phy.

lib/ethernet/mac_stm32fxx7.c

@@ -200,10 +200,10 @@ void eth_start(void)
  *
  * @param[in] clock enum eth_clk Core clock speed
  */
-void eth_init(enum eth_clk clock)
+void eth_init(uint8_t phy, enum eth_clk clock)
 {
 	ETH_MACMIIAR = clock;
-	phy_reset();
+	phy_reset(phy);
 
 	ETH_MACCR = ETH_MACCR_CSTF | ETH_MACCR_FES | ETH_MACCR_DM |
 		ETH_MACCR_APCS | ETH_MACCR_RD;