HID: add keyboard input assist hid usages

Add keyboard input assist controls usages from approved
hid usage table request HUTTR42:
http://www.usb.org/developers/hidpage/HUTRR42c.pdf



Signed-off-by: Olivier Gay <ogay@logitech.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>