Refactor getMacAddr function to retrieve MAC address as MAC-48 for IEEE 802.15.4 compatibility (#5208)

src/platform/esp32/main-esp32.cpp

@@ -51,7 +51,11 @@ void updateBatteryLevel(uint8_t level) {}
 
 void getMacAddr(uint8_t *dmac)
 {
+#if defined(CONFIG_IDF_TARGET_ESP32C6) && defined(CONFIG_SOC_IEEE802154_SUPPORTED)
+    assert(esp_base_mac_addr_get(dmac) == ESP_OK);
+#else
     assert(esp_efuse_mac_get_default(dmac) == ESP_OK);
+#endif
 }
 
 #ifdef HAS_32768HZ