hwmon: Fix 'Macros with complex values' checkpatch errors

Fix:

ERROR: Macros with complex values should be enclosed in parenthesis

when it is seen due to complex code and not due to multi-line variable
declarations.

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Alistair John Strachan <alistair@devzero.co.uk>
Acked-by: Alistair John Strachan <alistair@devzero.co.uk>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>