ESP32: Fix build failure of light switch app for esp32h2.

examples/light-switch-app/esp32/sdkconfig.defaults.esp32h2

@@ -0,0 +1,26 @@
+CONFIG_IDF_TARGET="esp32h2"
+
+# Enable OpenThread
+CONFIG_OPENTHREAD_ENABLED=y
+CONFIG_OPENTHREAD_SRP_CLIENT=y
+CONFIG_OPENTHREAD_LOG_LEVEL_DYNAMIC=n
+CONFIG_OPENTHREAD_LOG_LEVEL_NOTE=y
+CONFIG_OPENTHREAD_CLI=n
+CONFIG_OPENTHREAD_DNS_CLIENT=y
+
+# Disable lwip ipv6 autoconfig
+CONFIG_LWIP_IPV6_AUTOCONFIG=n
+
+# LwIP config for OpenThread
+CONFIG_LWIP_IPV6_NUM_ADDRESSES=8
+CONFIG_LWIP_MULTICAST_PING=y
+
+# MDNS platform
+CONFIG_USE_MINIMAL_MDNS=n
+CONFIG_ENABLE_EXTENDED_DISCOVERY=y
+
+# Disable STA for ESP32H2
+CONFIG_ENABLE_WIFI_STATION=n
+
+# Enable nano format
+CONFIG_NEWLIB_NANO_FORMAT=y