media: davinci: vpif: drop probe printk

Drivers should generally not print anything for a successful probe, and
printing "success" before probe is done makes no sense.

Drop the unnecessary and misleading dev_info() call from probe.

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Lad Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>