power: qpnp-smbcharger: reduce aicl deglitch time for QC 2.0

There are QC 2.0 adapters which collapse faster than the longer
deglitch time of 5mS. To handle such chargers set the deglitch
time to 15uS when running in QC 2.0 mode.

Use a voter to control the deglitch time reduction from VARB
workaround and QC 2.0.

CRs-Fixed: 948903
Change-Id: I8c41032154d788c4ae9cbcc35c7d4f4a28f4cc53
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>