arm64: dts: qcom: sm8350-mtp: add UFS host controller supply

According to schematics the L9B regulator supplies VCCQ (already in DTS)
and the UFS controller pads (VDD_PX10, missing vdd-hba).  Add the
missing supply for full hardware description, even though it should not
have functional impact.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230906104744.163479-6-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>