media: atomisp: Disable VCM for OV5693 for now

ov5693 sensor modules have a VCM, but for unknown reasons
the sensor fails to start streaming when instantiating
a VCM i2c-client (and the runtime-pm link between VCM
and sensor).

Disable the VCM for now, until this is resolved.

Link: https://lore.kernel.org/r/20230813152645.45834-1-hdegoede@redhat.com



Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>