arm64: dts: qcom: apq8016-sbc-d3-camera: Use more generic node names

Add "regulator" to the node names of the fixed regulators, and drop the
"_rear" part of the camera node name since it is not part of the class
of the device (which is simply "camera").

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20230922-apq8016-sbc-camera-dtso-v1-1-ce9451895ca1@gerhold.net


Signed-off-by: Bjorn Andersson <andersson@kernel.org>