power: qpnp-smbcharger: add support to read battery id and full charge

Add support to read battery resistance and full charge capacity
from fuel gauge and expose it through battery power supply. This
is needed as the userspace reads battery power supply to get
these parameters.

CRs-Fixed: 1035402
Change-Id: I7facc795cd2b734a38a5ffdacd2a2eab63074744
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>