arm64: dts: qcom: sdm845-db845c: Configure regulators for camss node

Add regulator to camss device tree node.

Signed-off-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Link: https://lore.kernel.org/r/20210316171931.812748-22-robert.foss@linaro.org


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