This code is actually part of a larger set from Mike Krufky
<mkrufky@linuxtv.org>, to support ATSC streaming from within the
pvrusb2 driver.  More to come...
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>