arm64: dts: qcom: sdx75-idp: align RPMh regulator nodes with bindings

arm64: dts: qcom: sdx75-idp: align RPMh regulator nodes with bindings

Device node names should be generic and bindings expect certain pattern
for RPMh regulator nodes:

  sdx75-idp.dtb: rsc@17a00000: 'pmx75-rpmh-regulators' does not match any of the regexes: '^regulators(-[0-9])?$', 'pinctrl-[0-9]+'

Fixes: 8a2dc39d1043 ("arm64: dts: qcom: sdx75-idp: Add regulator nodes")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230905163103.257412-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>