[PATCH] hwmon: New maintainer for w83791d

Add Charles Spirakis as the maintainer for the w83791d sensor chip
driver.

Signed-off-by: Charles Spirakis <bezaur@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>