clk: qcom: Fix MSM8916 venus divider value

One of the video codec clock frequencies has incorrect divider
value. Fix it.

Fixes: 3966fab8

 "clk: qcom: Add MSM8916 Global Clock Controller support"
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>