power: qpnp-fg-gen4: Add support to configure thermistor pull up

Battery thermistor pull up resistor configuration for GEN4 FG
comes from battery profile. Add support to read the property
from the battery profile and configure it.

Change-Id: Ib63047c8d141339443770c8e4dcc980f8b12007a
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>