Perf: Add event type check in hrtimer hotplug fix

The hrtimer hotplug fix was missing event_type check due to which
the check was passing both software clock and hardware cycles.

Change-Id: I1d16d0ccc6ce27963ace9d2f3e1e1eab8f8c7d18
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>