clk: qcom: Add debug clk support for SDM660

Update MUX_SRC_LIST array values according to clk_src.
Fix post_div_offset, cbcr_offset and post_div_shift values.

Change-Id: Ia5713f2c5950199e74ddd86d70ccfb55538c99f3
Signed-off-by: Chetan C R <cchinnad@codeaurora.org>
Signed-off-by: Ashok Raj D <adeenada@codeaurora.org>