hwmon: (aquacomputer_d5next) Add support for reading the +12V voltage sensor on D5 Next

Add support for reading the +12V voltage that the D5 Next pump receives.

Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com>
Link: https://lore.kernel.org/r/20220726120203.33773-1-savicaleksa83@gmail.com


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