msm: ipa: Move holb discard for Q6 zip pipes to AFTER_SHUTDOWN

There is a possibility that we have pending Q6 ZIP transacations
with IPA during modem shutdown. To prevent Q6 ZIP operations to
be blocking, move setting of holb discard and pipe delay for Q6 ZIP
pipes to AFTER_SHUTDOWN.

Change-Id: I10e2d9a9c37fc439f1e8f7ff375ff92a00e4cd74
Acked-by: Chaitanya Pratapa <cpratapa@qti.qualcomm.com>
Signed-off-by: Ravinder Konka <rkonka@codeaurora.org>