4faa08c491
Summary: Some systems are based around mpc85xx, but need special initialization. By making the mpc85xx platform a base class, these systems can be platform subclasses, and perform board-specific initialization in addition to the mpc85xx initialization. Test Plan: Tested on my RB800. A platform class was created, and will be committed separately. Reviewed By: nwhitehorn Differential Revision: https://reviews.freebsd.org/D3305