hwmon: (ads1015) Convert to using %pOF instead of full_name

hwmon: (ads1015) Convert to using %pOF instead of full_name

Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.

Signed-off-by: Rob Herring <[email protected]>
Cc: Dirk Eibach <[email protected]>
Cc: Jean Delvare <[email protected]>
Cc: Guenter Roeck <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>