power: qpnp-qg: Add SOH, ESR_Actual and ESR_Nominal properties

Add State of health (SOH), property which indicates battery state
of health.
Also add SOC_reporting_ready, ESR_Actual and ESR_Nominal properties
for SOH calculations.

CRs-Fixed: 2259538
Change-Id: I32e1c42e58f739b277943ff07863249a1c40a4d0
Signed-off-by: Vamshi Krishna B V <vbv@codeaurora.org>