UBUNTU: [Upstream] dvb-usb: fix tuning with Cinergy T2

OriginalLocation: http://patchwork.kernel.org/patch/38706/
BugLink: http://bugs.launchpad.net/bugs/421258

Initialize param.flags

Signed-off-by: Eberhard Mattes <eberhard.mattes@web.de>
Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>