msm: adsprpc: enable sensors PD restart notifications from SLPI

Enable sensors PDR notifications from SLPI, instead of ADSP. Add
additional debug logs for SSR and PDR notifications.

During static PD daemon process init, bail when the PD is not up
only if the service locator callback function for PD restart
notifications was invoked at least once. This is to avoid false
daemon failures when the service locator is down but the static PD
is actually up.

Change-Id: I293121f9602466e423ff01cb3e079f72c12a351d
Acked-by: Thyagarajan Venkatanarayanan <venkatan@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>