[media] vp702x: cleanup: whitespace and indentation

Some whitespace, one linebreak and one unneded variable
initialization...

Signed-off-by: Florian Mickler <florian@mickler.org>
Cc: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>