b239c24baa
Summary: This is (probably step 1) of enhancing the book-e pmap to support the full 36-bit physical address space on Freescale e500 and e5500 cores. Thus far it has only been regression tested on one platform. Since I only have one other Book-E platform (e5500), that needs work beyond this, I haven't yet tested it on this. Test Plan: Regression tested on my RouterBoard RB800. Reviewed By: marcel Differential Revision: https://reviews.freebsd.org/D3027