Angus Gratton 9d72bdda58 asio coap: If LWIP IPV6 is disabled, automatically don't build asio & coap
- Removes need to manually exclude these components as shown at
  https://github.com/espressif/esp-idf/issues/3781#issuecomment-825742378

- Hide the config for these components if IPV6 is disabled

- The components are still included in the build, but with no source
  files

Backport of e305f2938278c2a39e75c21a3ed59d8f4d4e62fa

Closes https://github.com/espressif/esp-idf/issues/7816
2021-11-23 22:39:58 +08:00
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