HID: lg4ff - Add support for native mode switching

This patch allows the lg4ff driver to switch wheels to the native mode. Since
this is specific to Logitech wheels only, it's handled in hid-lg4ff rather than
hid-lg.

Signed-off-by: Michal Malý <madcatxster@gmail.com>
Signed-off-by: Simon Wood <simon@mungewell.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>