clk: qcom: gcc-msm8939: use parent_hws where possible

Use parent_hws instead of hanving parent_data with just a single .hw
entry to speed up and simplify parent lookups.

Signed-off-by: Dmitry Baryshkov <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: lumag