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.

(cherry picked from commit 1b82c72e23f013ea2bdc526ad2859b421a97f48a)

Change-Id: I88c779dc21f47acd7a1fa1ded02e90825d7dc9d6
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>