[PATCH] ppc/ppc64: Cleanup PPC970 CPU initialization

[PATCH] ppc/ppc64: Cleanup PPC970 CPU initialization

This cleans up the code used to initialize the 970 CPU.

More specifically, it adds support for the 970FX, makes sure we don't
touch registers we aren't supposed to when running in LPAR mode, and
stop blindly zeroing out HID4 and HID5, we just clear the bits we really
want clear in there and leave the rest to the firmware.