MAINTAINERS: Add powerpc drivers to the powerpc section

[Michael Ellerman]

On Wed, 2016-02-03 at 01:36:56 UTC, Michael Ellerman wrote:
> We'd like folks working on drivers for powerpc to also Cc linuxppc-dev,
> so we can be aware of what's going on in drivers and/or review the
> changes.
> 
> So add patterns to the powerpc MAINTAINERS section to catch some of the
> drivers we're interested in.
> 
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>

Applied to powerpc next.

https://git.kernel.org/powerpc/c/ef69b03dfd321ffa1bcb4248e9

cheers