power: qpnp-qg: Update FIFO processing during suspend

Add logic to append FIFO data collected during suspend
to the new FIFO data. Also, move the GOOD OCV handling
during resume to the userspace.

Also fix reporting the real-time FIFO count.

Change-Id: I43e8ca4d986ad255f93e16cebdf24c68060da36c
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>