hwmon: (raspberrypi) update MODULE_AUTHOR() email address

The email address listed in MODULE_AUTHOR() will be disabled in the
near future. Replace it with my private one.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/1565720249-6549-2-git-send-email-wahrenst@gmx.net


Signed-off-by: Guenter Roeck <linux@roeck-us.net>