power: qcom: Move power table notification outside of critical section

Since the blocking chain notifiers can be called from process context,
the notification must not be sent from within a critical section.

Move the blocking notification outside the critical section.

Change-Id: Ia5679310fc59f25643e7c8d572cc230d262c5937
Signed-off-by: Archana Sathyakumar <asathyak@codeaurora.org>