media: dtv5100: fix control-request directions

The direction of the pipe argument must match the request-type direction
bit or control requests may fail depending on the host-controller-driver
implementation.

Fix the control requests which erroneously used usb_rcvctrlpipe().

Fixes: 8466028b

 ("V4L/DVB (8734): Initial support for AME DTV-5100 USB2.0 DVB-T")
Cc: stable@vger.kernel.org      # 2.6.28
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>