hwmon: (f71882fg) Add support for the F81865F

Add support for the Fintek F81865F. It's essentially compatible with
the F71882FG, but has fewer inputs: 7 voltage, 2 temperature and 2 fan
inputs only.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>

Documentation/hwmon/f71882fg

@@ -41,6 +41,10 @@ Supported chips:
     Note: This is the 64-pin variant of the F71889FG, they have the
 	  same device ID and are fully compatible as far as hardware
 	  monitoring is concerned.
+  * Fintek F81865F
+    Prefix: 'f81865f'
+    Addresses scanned: none, address read from Super I/O config space
+    Datasheet: Available from the Fintek website
 
 Author: Hans de Goede <hdegoede@redhat.com>