[media] staging/media/dt3155v4l: use module_pci_driver macro

the driver duplicates the module_pci_driver code,
remove the duplicate code and use the module_pci_driver macro.

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>