clk: qcom: clk-debug: Disable the DEBUG clocks when not being used

The multimedia debug clocks if left enabled will block the
MMCX rail from going into power collapse. Toggle them on a
need-by basis.

Change-Id: Ia7e946d30f52b2128f40fa9b965bd7eb97e28f73
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>