[0/5] powerpc: PA Semi PWRficient patches

Hi,

The following series of patches introduces basic support for PA Semi's
PA6T core, and the base platform support for PWRficient PA6T-1682M.

It is split up in 5 separate patches:

1. Reduce default cacheline size to 64 bytes
2. Divorce CPU_FTR_CTRL from CPU_FTR_PPCAS_ARCH_V2_BASE
3. Cpu table entry, PVR value
4. Basic arch/powerpc/platforms/pasemi contents
5. MAINTAINER entry


-Olof