msm: dcvs: check power collapse state after updating params

The dcvs params are updated when the number of online cores change.
When this happens, the low power modes of each CPU need to be
enabled or disabled depending on how fast they are running and what
the new power collapse frequency thresholds are.

Change-Id: I2341682918822549059e4a8ba6a6d35323f227d2
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>