This patchset handles the fixes made to the UV4 HUB for upcoming Intel
processors as there are some interface changes.
v2: fix excessive MMIOH redirect messages and print redirect MMR base for
each MMIOH section.
* Update uv_mmrs.h to prep for fixed defines for UV4A.
* Updates to handle UV4 vs. UV4A (fixed) arches.
* Updates to handle UV4 GAM (global addressable memory) MMRs fixes.
* Updates to handle UV4 BAU (broadcast assist unit) MMRs fixes.
* Turn on UV4A_IS_SUPPORTED to enable code and header file fixes.
