powerpc: Remove __arch_swab*
powerpc: Remove __arch_swab*

The generic code uses gcc built-ins which work fine so there's no benefit
in implementing our own anymore.

We can't completely remove the ld/st_le* functions as some historical
cruft still uses them, but that's next on the radar

Signed-off-by: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs