arm64: dts: qcom: sm8350-sony-xperia-sagami: specify which LDO modes are allowed

This board uses RPMH, specifies "regulator-allow-set-load" for LDOs,
but doesn't specify any modes with "regulator-allowed-modes":

  sm8350-sony-xperia-sagami-pdx214.dtb: regulators-0: ldo5: 'regulator-allowed-modes' is a dependency of 'regulator-allow-set-load'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221228112456.31348-2-krzysztof.kozlowski@linaro.org