staging: vt6656: Delete int.c/h file and move functions to usbpipe

Move functions vnt_int_process_data and vnt_int_report_rate to
usbpipe.c and vnt_interrupt_data to usbpipe.h

These form part of the USB structure.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/bc21d3d7-81be-4ec1-030e-4e7a45f98238@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>