Make sure that TLB1 mappings are aligned correctly.
Move CCSR discovery into the platform module, while simultaneously making
it more flexible about how the CCSR range is found. With this change, the
stock MPC85XX will boot on a Routerboard 800.

Hardware donated by:	Benjamin Perrault
Add missing include files for the printf_l and scanf_l man pages.

Reported by:	swildner@dragonflybsd.org
There is no reason Book-E needs to save XER and CTR on context switches.
They aren't Book-E specific registers to begin with and, even if they were,
are defined volatile by the ABI.