soc: qcom: smp2p_sleepstate: Relax wakeup source on failing to register IRQ

smp2p_sleepstate_handler() already sets a wakeup event with a 200ms
timeout.
But in case an IRQ(threaded) fails to register, it will instantly
relax the wakeup source.
Alters no behaviour.

Change-Id: I5f77f70c9f2e3602e88450176fd87986ab75f6f7
Signed-off-by: Panchajanya1999 <panchajanya@azure-dev.live>
Signed-off-by: Jebaitedneko <Jebaitedneko@gmail.com>