Merge branch 'feature/ethernet_phy_ksz8081' into 'master'

Ethernet phy driver: ksz8081

Closes IDFGH-4775

See merge request espressif/esp-idf!12723

Author: david-cermak

Diff for: components/esp_eth/CMakeLists.txt

@@ -22,7 +22,7 @@ if(CONFIG_ETH_ENABLED)
         list(APPEND srcs "src/esp_eth_mac_esp32.c"
                          "src/esp_eth_phy_dp83848.c"
                          "src/esp_eth_phy_ip101.c"
-                         "src/esp_eth_phy_ksz8041.c"
+                         "src/esp_eth_phy_ksz80xx.c"
                          "src/esp_eth_phy_lan8720.c"
                          "src/esp_eth_phy_rtl8201.c")
     endif()

Diff for: components/esp_eth/include/esp_eth_phy.h

@@ -264,6 +264,17 @@ esp_eth_phy_t *esp_eth_phy_new_dp83848(const eth_phy_config_t *config);
 */
 esp_eth_phy_t *esp_eth_phy_new_ksz8041(const eth_phy_config_t *config);
 
+/**
+* @brief Create a PHY instance of KSZ8081
+*
+* @param[in] config: configuration of PHY
+*
+* @return
+*      - instance: create PHY instance successfully
+*      - NULL: create PHY instance failed because some error occurred
+*/
+esp_eth_phy_t *esp_eth_phy_new_ksz8081(const eth_phy_config_t *config);
+
 #if CONFIG_ETH_SPI_ETHERNET_DM9051
 /**
 * @brief Create a PHY instance of DM9051