bpf: Enable BPF JIT on ppc32

[David Miller]

aFrom: Denis Kirjanov <kda at linux-powerpc.org>
Date: Tue, 17 Feb 2015 10:04:37 +0300

> This patch series enables BPF JIT on ppc32. There are relatevily
> few chnages in the code to make it work.
> 
> All test_bpf tests passed both on 7447a and P2041-based machines.
> 
> Changelog:
> v1 - > v2: Reordered Kconfig patch in the series

Series applied to net-next, thanks.