power: qpnp-fg-gen3: Improve ESR accuracy at cold temperature with Qnovo

When the battery is in cold temperature for a certain amount of
time and device is charged with Qnovo enabled charging, ESR pulse
will fire less frequently. This along with ESR pulses not getting
qualified can cause the ESR to be less accurate. To improve ESR
accuracy, add change to apply relaxed filter coefficients once
the battery temperature starts ramping up after hitting a lower
threshold of say 6 C after charging begins.

CRs-Fixed: 2151708
Change-Id: Iff6c2ffbab1f327dfefcf1550213c37df4a8ad42
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
Signed-off-by: Shilpa Suresh <sbsure@codeaurora.org>