hwmon/pc87360: combine sysfs-attr

heres a 3 patch set to pc87360 driver, to combine multiple
callbacks (one per attribute) into single combined-function callbacks, now updated to apply on top of just-blessed unchecked rc�vice_create_file patches.

they are:

1. hwmon-pc87360-maintainer.patch
the bribe, as it were.
thanks for authoring this driver Jean.

2. hwmon-pc87360-use-sensor-attr-2.patch

Converts SENSOR_ATTRs to SENSOR_ATTR_2s for most sysfs-callbacks. Also adds a number of #define FN_$(SENSOR)_($ATTR)s which provide symbolic values used in the sensor array initializations.

3. hwmon-pc87360-sysfs-combo-callbacks.patch

This combines individual (show|set)_Sensor_Attr callbacks into (show|set)_Sensor callbacks that handle all that Sensor's Attrs. The callback routines use the .nr field to determine what attribute they were called for.

previous version of patches saved ~ 9%