power: qpnp-fg: improve ESR detection during cold battery condition

As per the PMIC systems team recommendation, improve the ESR
detection during cold battery condition to prevent jumps in
detected value. Update the ESR filter values to achieve that.

CRs-Fixed: 812179
Change-Id: Ief214925861a5df69e9cf9f8b4f69f491f59d671
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>