clk: qcom: clk-rpmh: Convert to parent data scheme

Convert the rpmh clock driver to use the new parent data scheme by
specifying the parent data for board clock.

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lkml.kernel.org/r/20190826173120.2971-3-vkoul@kernel.org


Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>