At the moment we define a single ov5640 sensor in the apq8016-sbc and
disable that sensor.

The sensor mezzanine for this is a D3 Engineering Dual ov5640 mezzanine
card. Move the definition from the apq8016-sbc where it shouldn't be to a
standalone dts.

Enables the sensor by default, as we are adding a standalone mezzanine
structure.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230811234738.2859417-7-bryan.odonoghue@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>