V4L/DVB (12370): v4l doc: fix cqcam source code path

Fixed the c-qcam source code path in the linux kernel tree.

Signed-off-by: Mhayk Whandson <eu@mhayk.com.br>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>