msm: ipa: Fix holb event log handling

When we get a bad peripheral event from uC when there is a pending
HOLB ADD/DEL command response from uC we will run into a deadlock
if we try to acquire mutex as part of event log. Make a change
to remove mutex lock when logging the events.

Change-Id: I60ca3ecc4fe4d090278f745bdf2bb9e1bd09ca60
Signed-off-by: Chaitanya Pratapa <cpratapa@codeaurora.org>