Update to latest devel tree
hidpp: tp_raw: remove structs and use arrays directly

Avoid arch specific problems and packed struct

Also remove the test which detect when you have to process data:
not so smart.
wtp: flip y axis when needed
wtp: export resolution given by the device
WTP: add quirk mechanism

Of course, we will need quirks
HIDPP touch_raw: forward buttons events

Missing from the first implementation
WTP: more accurate treatment of incoming touches

We can not rely on end_of_frame because the wireless touchpad was bugged
whereas the T650 is fixed.
hid-ids.h: fix tabs
WTP: add support for TK820
WTP: send set_mode at each reconnect

When the device was turned off and on, the raw mode was not set, leading
to a non responsive touchpad.
hidpp: add missing EXPORT