More idiomatic default ethernet that doesn't break the build

src/configuration.h

@@ -561,5 +561,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define HAS_SCREEN 0
 #endif
 
+#ifndef USE_ETHERNET_DEFAULT
+#define USE_ETHERNET_DEFAULT 0
+#endif
+
 #include "DebugConfiguration.h"
 #include "RF95Configuration.h"

src/mesh/NodeDB.cpp

@@ -961,6 +961,10 @@ void NodeDB::installDefaultConfig(bool preserveKey = false)
     config.network.wifi_enabled = USERPREFS_NETWORK_WIFI_ENABLED;
 #endif
 
+#if USE_ETHERNET_DEFAULT
+    config.network.eth_enabled = true;
+#endif
+
 #ifdef USERPREFS_NETWORK_WIFI_SSID
     strncpy(config.network.wifi_ssid, USERPREFS_NETWORK_WIFI_SSID, sizeof(config.network.wifi_ssid));
 #endif

variants/esp32s3/ELECROW-ThinkNode-G3/variant.cpp

@@ -1,4 +1,4 @@
-#include "configuration.h"
+#include "NodeDB.h"
 
 void variantDefaultConfig()
 {

variants/esp32s3/ELECROW-ThinkNode-G3/variant.h

@@ -34,3 +34,5 @@
 #define ETH_INT_PIN 10
 #define ETH_RST_PIN 9
 // #define ETH_ADDR 1
+
+#define USE_ETHERNET_DEFAULT 1

variants/esp32s3/ELECROW-ThinkNode-M7/variant.cpp

@@ -1,4 +1,4 @@
-#include "configuration.h"
+#include "NodeDB.h"
 
 void variantDefaultConfig()
 {

variants/esp32s3/ELECROW-ThinkNode-M7/variant.h

@@ -41,3 +41,5 @@
 #define ETH_CS_PIN 21
 #define ETH_INT_PIN 45
 // #define ETH_ADDR 1
+
+#define USE_ETHERNET_DEFAULT 1