lwip: Enable ethernet for both ESP32 & ESP32-S2Beta (SPI ethernet)

components/lwip/CMakeLists.txt

@@ -87,6 +87,7 @@ set(srcs
     "port/esp32/freertos/sys_arch.c"
     "port/esp32/netif/dhcp_state.c"
     "port/esp32/netif/nettestif.c"
+    "port/esp32/netif/ethernetif.c"
     "port/esp32/netif/wlanif.c")
 
 if(CONFIG_LWIP_PPP_SUPPORT)
@@ -123,19 +124,11 @@ if(CONFIG_LWIP_PPP_SUPPORT)
         "lwip/src/netif/ppp/polarssl/sha1.c")
 endif()
 
-# Ethernet support for ESP32 only
-if (IDF_TARGET_ESP32)
-    set(priv_requires esp_eth)
-    list(APPEND srcs "port/esp32/netif/ethernetif.c")
-else()
-    set(priv_requires)
-endif()
-
 idf_component_register(SRCS "${srcs}"
                     INCLUDE_DIRS "${include_dirs}"
                     LDFRAGMENTS linker.lf
                     REQUIRES vfs esp_wifi
-                    PRIV_REQUIRES ${priv_requires} tcpip_adapter nvs_flash)
+                    PRIV_REQUIRES ${priv_requires} esp_eth tcpip_adapter nvs_flash)
 
 # lots of LWIP source files evaluate macros that check address of stack variables
 target_compile_options(${COMPONENT_LIB} PRIVATE -Wno-address)