v2 rebases the previous set of patches against Benjamin Tissoires' latest patch
set and adds some additional changes:

- Adds a patch setting the new HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP for the
  Sixaxis and DualShock 4 when they are connected via Bluetooth.  This adds
  support for sending output reports via hidraw.
  
- A patch with a new union/struct is introduced for the Sixaxis output report.
  This improves readability, particularly in the later blink support patch.
  
- Adds an IDA id allocator and uses it to assign the number at the end of the
  battery string and set the default LED values relative to other Sony
  controllers.

- Drops the LED trigger patch as it probably doesn't belong in kernel space.
  
- Addresses various issues raised during code review of the previous patch set.