[NUCLEO_F103RB] add SPI slave and I2C slave
[NUCLEO_F401RE] add I2C slave and SPI slave
Merge branch 'master' of git://github.com/dbestm/mbed into dbestm-master

Conflicts:
	libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/device.h
	libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/i2c_api.c
Merge branch 'master' of github.com:mbedmicro/mbed