phy: qcom-qmp-combo: separate clock and provider registration

In preparation for supporting devicetree bindings which do not use child
nodes, separate clock registration from clock-provider registration.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221121085058.31213-10-johan+linaro@kernel.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>