Removed Freescale header file

Signed-off-by: Jacob McGladdery <jacobm117@gmail.com>
Finished initial version of the MK20D5 header file

Specific header for use with ChibiOS.

Signed-off-by: Jacob McGladdery <jacobm117@gmail.com>
Updated dox text

Signed-off-by: Jacob McGladdery <jacobm117@gmail.com>
Rewrote HAL init function to work with new header file

Signed-off-by: Jacob McGladdery <jacobm117@gmail.com>