[PATCH 0/4] HID: implement new transport-driver callbacks

These patches are originally the work of David Herrmann who suggested that I 
update and submit them as their functionality is required for some pending
patches to the hid-sony driver.

These patches implement the SET/GET_REPORT and raw intr OUTPUT requests for all
transport drivers.  It adds two callbacks to the hid_ll_driver struct:

int (*raw_request)(struct hid_device *hdev, unsigned char reportnum,
		   __u8 *buf, size_t len, unsigned char rtype, int reqtype);

int (*output_report)(struct hid_device *hdev, __u8 *buf, size_t len);

along with the necessary support fuctions in the USBHID, and HIDP drivers.

UHID is not converted yet.