clk: qcom: common: add device tree consumer support for clk_hws

Add support for device tree consumers to utilize clocks which
are registered via clk_hws in struct qcom_cc_desc.

This modification is effectively
commit 84196373f39d ("clk: qcom: Support to add hardware clocks
to of_clk_hw_provider")
reconciled with with
commit 760be658 ("clk: qcom: Make common clk_hw
registrations").

Change-Id: I1e0bdeecd2d4092bff3110168438211493f4feda
Signed-off-by: David Collins <collinsd@codeaurora.org>