fix toolchains between old and new ESP32

arch/esp32/esp32c6.ini

@@ -1,6 +1,6 @@
 [esp32c6_base]
 extends = esp32_base
-platform = https://github.com/Jason2866/platform-espressif32.git#d8d8f1bcf4bfcae82db2bef70a2b0014f1d2bc13
+platform = https://github.com/Jason2866/platform-espressif32.git#92cd8e2ed8ec8392b32adc89451aecfcbbaa1726
 build_flags =
   ${arduino_base.build_flags}
   -Wall

src/configuration.h

@@ -69,6 +69,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifndef RTC_DATA_ATTR
 #define RTC_DATA_ATTR
 #endif
+#ifndef EXT_RAM_BSS_ATTR
+#define EXT_RAM_BSS_ATTR EXT_RAM_ATTR
+#endif
 
 // -----------------------------------------------------------------------------
 // Regulatory overrides

src/mesh/wifi/WiFiAPClient.cpp

@@ -310,8 +310,12 @@ static void WiFiEvent(WiFiEvent_t event)
         onNetworkConnected();
         break;
     case ARDUINO_EVENT_WIFI_STA_GOT_IP6:
+#if ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 0)
         LOG_INFO("Obtained Local IP6 address: %s\n", WiFi.linkLocalIPv6().toString().c_str());
         LOG_INFO("Obtained GlobalIP6 address: %s\n", WiFi.globalIPv6().toString().c_str());
+#else
+        LOG_INFO("Obtained IP6 address: %s\n", WiFi.localIPv6().toString().c_str());
+#endif
         break;
     case ARDUINO_EVENT_WIFI_STA_LOST_IP:
         LOG_INFO("Lost IP address and IP address is reset to 0\n");

src/sleep.cpp

@@ -451,8 +451,11 @@ esp_sleep_wakeup_cause_t doLightSleep(uint64_t sleepMsec) // FIXME, use a more r
  */
 void enableModemSleep()
 {
+#if ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 0)
     static esp_pm_config_t esp32_config; // filled with zeros because bss
-
+#else
+    static esp_pm_config_esp32_t esp32_config; // filled with zeros because bss
+#endif
 #if CONFIG_IDF_TARGET_ESP32S3
     esp32_config.max_freq_mhz = CONFIG_ESP32S3_DEFAULT_CPU_FREQ_MHZ;
 #elif CONFIG_IDF_TARGET_ESP32S2