unit-test-app: make compatible with ESP32-S2 reset reasons
unit-test-app: make compatible with ESP32-S2 reset reasons

ESP32-S2 has slightly different names of reset reasons, printed by
the ROM. Allow using ESP32 reset reason names in test cases.

espressif/esp-idf,espressif/esp-idf,espressif/esp-idf,espressif/esp-idf