power: qpnp-qg: Minor modifications in QG

 - Reading of sticky register and its usage
   for GOOD_OCV check.
 - SOC scaling and suspend/resume handing only
   if the profile is loaded.
 - Update the PON SOC handling logic.

Change-Id: I4e08aa33a168adf7aa23f273ff3f3676091237e3
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>