Geremia G / mbed-src

- fix F411 F334 systeminit when HSI used - portinout always read IDR regardless of port direction

Fork of mbed-src by mbed official

Diff: targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/serial_api.c

Revision:
304:89b9c3a9a045
Parent:
300:55638feb26a4