regulator: cpr3: Use scaled gate count for aging measurements

Use scaled gate count (GCNT) for aging measurements to reduce
the noise effect on aging data. The amount of scaling depends
on the noise effect observed in characterization results. Use
a selected scaling factor value to derive the gate count (GCNT)
used for aging measurements.

CRs-Fixed: 1025832
Change-Id: I0eb3fb08d51ddca5cd4c08e26bc83eb9f66fd3ed
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>