power: qcom-charger: add a workaround flag for QC AUTH interrupt

In PM660 "QC authentication done" IRQ is a pulse and thus it
does not require workaround to disable this IRQ after authentication
completes. Add a workaround flag to enable this only for PMI8998.

Change-Id: I766219df38fc4954f5208d6db323b680e8e5fafd
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>