interface, esp8266-spi-arduinoprimo.c: use looser reset timings
interface, esp8266-spi-arduinoprimo.c: use looser reset timings

Rising edge of reset signal is not so fast. Plus, the nordic chip boot
process was slowed down (to avoid its uart to be initialized while
the esp8266 is coming out of reset, thus influencing the esp8266 boot mode
via GPIO15). So hold spi cs low for 200ms after releasing nordic reset
to make sure that the nrf52 actually enters programming mode.

ciminaghi/libdfu,ciminaghi/libdfu,ciminaghi/libdfu