pinctrl: qcom: lpass-lpi: Make the clocks optional, always

pinctrl: qcom: lpass-lpi: Make the clocks optional, always

Some platforms provide a single clock source to all LPASS peripherals,
others provide two, and there are probably others that provide it through
magic invisible-to-Linux wires.

Rely on bindings to mandate the adequate number of clocks necessary.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230714-topic-lpass_lpi_cleanup-v1-1-dc18b5bd14f7@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>