esp32/hal/esp32_mphal.c: release GIL if waiting longer than 1000 us
esp32/hal/esp32_mphal.c: release GIL if waiting longer than 1000 us

jmarcelino/pycom-micropython,jmarcelino/pycom-micropython,jmarcelino/pycom-micropython,jmarcelino/pycom-micropython,jmarcelino/pycom-micropython