V4L/DVB (8042): DVB-USB UMT-010 channel scan oops

In the umt-010 driver the struct umt_properties sets the number of URBs for
transfer to 20.  But in dvb-usb.h MAX_NO_URBS_FOR_DATA_STREAM is set to 10.

Not surprisingly this causes an oops for all devices which use the umt-010
chipset when they are inserted.

fix on Kaffeine channel scan for

Initialize stream count using MAX_NO_URBS_FOR_DATA_STREAM.

Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: maximilian attems <max@stro.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>