Add I2C slave address. Multiple I2C addresses are possible
for PN544 module. Configure address according to board design.
Change-Id: I847e8f3db631f5039cf15143a9982f4b9b209f27
First implementation of a NFC HAL. This implementation doesn't
offer a generic NFC device HAL (yet), but offers typed interfaces
for different NFC controllers. Currently only the PN544 is supported.
Change-Id: I3ac04dcd767fb12a433edbe88ec7068eb1930a57