msm: adsprpc: Register for sensors PDR notifications

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

Change-Id: If7fa4b623305404cd75e6dea818ff7ae554e02c8
Acked-by: Himateja Reddy <hmreddy@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>