Creating the start of the frame is done in the same way for pac7302
and for pac7311. Extract this common part to the pac_start_frame()
function.
Signed-off-by: NMarton Nemeth <nm127@freemail.hu>
Signed-off-by: NJean-Francois Moine <moinejf@free.fr>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>