Partially Revert "msm: cpufreq: Remove cross-calling limitation"

This partially reverts commit b1b28a76cdff86da9685f98d1dffbd58328ab08f.

cpu callback was creating problem for interactive governor. This revert fixes it. Callback is useful only if dvs is restructured as we have not implemented yet. This revert fixes issues created by it.

Now its perfect. :D

Signed-off-by: Harsh Bhanvadia <harsh.slade@gmail.com>