RIOT port for the MKW22D512 SiP and Phytec PBA-D-01 PhyWave Evaluations-Board

This PR add support for Freescale MKW22D512 SiP and Phytec PBA-D-01 PhyWave Evaluations-Board.
Status:
- spi, master mode ok
- i2c, master mode ok
- uart ok
- shell ok
So, should we mark this as WIP for now?