cpufreq: qcom: fix wrong compatible binding

Binding in Documentation is still "operating-points-v2-kryo-cpu".
Restore the old binding to fix the compatibility problem.

Fixes: a8811ec7

 ("cpufreq: qcom: Add support for krait based socs")
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>