media: rkisp1: fix missing mbus.type -> mbus_type conversion

There was one missing sensor->mbus.type to sensor->mbus_type
conversion which broke the build.

I suspect this was due to a merge conflict that was incorrectly resolved.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>