cnss: Fix the timeout value passed to _pm_wakeup_event API

_pm_wakeup_event API expects the timeout value in msec.

The timeout argument passed to cnss_pm_wake_lock_timeout API
is already in msec.

No need to convert the timeout value from jiffies to msec
when passing timeout value to _pm_wakeup_event.

Change-Id: I7f6691157970daa033b8f09c9d5959fef6617662
CRs-Fixed: 619610
Signed-off-by: Seelam Komal <kseelam@codeaurora.org>