Added myself as XStormy16 maintainer in MAINTAINERS

[Andrew Cagney]

> As the subject says...  I added myself as the maintainer for
> the new Sanyo XStormy16 target under the obvious fix rule.


Not 100% obvious :-) You beat me to sending out an e-mail about this 
(we'd exchanged e-mail about it) :-/.  Can you also add a ``,-Werror'' 
to the end of the MAINTAINERS line and an entry/section in the NEWS file.

I've confirmed that the target can be built as a cross debugger with the 
  -Werror flag.

enjoy,
Andrew