[media] media: davinci: fix section mismatch warnings

This patch fixes section mismatch warnings for
davinci video drivers.

[mchehab@redhat.com: applied it as a fixup over the previous (and wrong) changeset c6afbf29]
Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>