[ALSA] soc - neo1973_wm8753.c change maintainer contact info

I have moved workplaces since I originally wrote this driver so update
the contact info for new employers.

Signed-off-by: Graeme Gregory <graeme@openmoko.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>