clk: qcom: debugcc-qcs405: Update post div value to 1

Post div value for debugmux cc is set to 4 for
measuring all the clocks which is giving wrong
measure value. Fix the same by changing it to 1
to get correct clock measure value.

Change-Id: I28e398725d4c636610520d6e19a21ec4b98f86a7
Signed-off-by: Shefali Jain <shefjain@codeaurora.org>