defconfig: kona: Allow only root users to create perf events

As a mark of security, increase the perf_event_paranoid value to 3,
such that it allows only previledged users to create perf events.

Change-Id: I23f0ed4624f1a1843affe8693bf7ba5eb846038b
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>