HID: hid, make parsing event driven

Next step for complete hid bus, this patch includes:
- call parser either from probe or from hid-core if there is no probe.
- add ll_driver structure and centralize some stuff there (open, close...)
- split and merge usb_hid_configure and hid_probe into several functions
  to allow hooks/fixes between them

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

net/bluetooth/hidp/hidp.h

@@ -151,6 +151,8 @@ struct hidp_session {
 
 	struct sk_buff_head ctrl_transmit;
 	struct sk_buff_head intr_transmit;
+
+	struct hidp_connadd_req *req;
 };
 
 static inline void hidp_schedule(struct hidp_session *session)