[PATCH] USB: add LD devices to hid blacklist

below you will find one patch to hid-core.c, which lets usbhid ignore
our HID devices. It would be nice, if you can apply it.

Signed-off-by: Michael Hund <mhund@ld-didactic.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>