Hi Alexander,
The 'GenericSPI' component is for legacy HCS08 and ColdFire devices, and the 'SPI channel' points to their Init_SPIxxx component. So it is not applicable for Kinetis (as the API is different). The documentation for the component was not clear abou this (I appologize!), so I have updated it.
If you want to use a software (bit banging) SPI implementation, you could use the GenericSWSPI too:

Erich