linux-phytec-fsl

powerpc: Introduce new ___PPC_RA/B/S/T macros

These are currently the same as __PPC_RA/B/S/T but we'll wrap them
soon.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>