HID: add new driver for non-compliant Saitek devices

The driver currently only supports the PS1000 controller.
It fixes the report descriptor by removing a non-existing axis and
clearing the constant bit on the d-pad and button input reports.

Signed-off-by: Andreas Hübner <andreas@k4n.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --cc drivers/hid/Kconfig
Simple merge

diff --cc drivers/hid/Makefile
Simple merge

diff --cc drivers/hid/hid-core.c
Simple merge

diff --cc drivers/hid/hid-ids.h
Simple merge

diff --cc drivers/hid/hid-saitek.c
Simple merge