MAINTAINERS: Update email address for patches to Wolfson parts

A somewhat overdue update of the address for sending patches on Wolfson
parts to since our acquision a couple of years ago by Cirrus Logic.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed