media: adv7180: add support for ancillary devices

media: adv7180: add support for ancillary devices

Depending on other devices on the i2c bus, using a non-default address
for the CSI and VPP devices may be necessary.

Replace calls to i2c_new_dummy_device with i2c_new_ancillary_device,
which can directly use an i2c address from the device tree.

Program the actual addresses of the sub-devices when configuring the
chip.

Signed-off-by: Thorsten Schmelzer <tschmelzer@topcon.com>
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>