qcom-charger: qpnp-fg-gen3: add v2 SRAM register map

The location of some fuel gauge SRAM registers have changed in
PMICOBALT v2. Add a new SRAM register map for v2 to handle these changes.

Change-Id: I1fcfce8e56b1d4e8b8f54457193cd547fb5e3de7
Signed-off-by: Nicholas Troast <ntroast@codeaurora.org>