msm: cpr-regulator: disable CPR on invalid quotients

When invalid CPR quotients are fused, continuous interrupts could
happen, which would cause interrupt storm. Check the fused quotient
values and mark as invalid for any error so that CPR will be disabled.

CRs-Fixed: 505081
Change-Id: I8441b8531bcf6b34833eafa0f91169134debad6c
Signed-off-by: Willie Ruan <wruan@codeaurora.org>