arm64: dts: qcom: msm8998-xperia: Add camera regulators

All of the machines of the Sony Yoshino platform are equipped with
two cameras, sharing the same regulators configuration.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210909123733.367248-6-angelogioacchino.delregno@somainline.org