This config also prevents crashes due to the commit 6be363f, which
fix a race condition in multi-threaded write/read of the serial
driver, but increases stack size.
MCUboot support is no longer behind EXPERIMENTAL for the following
chips:
- ESP32
- ESP32-S2
- ESP32-S3
- ESP32-C3
Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>