clk: qcom: Fix i2c frequency table

PXO is 25MHz, not 27MHz. Fix the table.

Fixes: 24d8fba4

 "clk: qcom: Add support for IPQ8064's global
clock controller (GCC)"

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Andy Gross <agross@codeaurora.org>
Tested-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>