icnss2: Add debugs prints to check PD restart status

PD restart is enabled by adding pd restart enabled
entry in modemr.jsn file. If pd restart is not enabled,
the service notifier will return EOPNOTSUPP error to
wlan platform driver. This change adds debug logs to
check if pd restart request has been processed successfully
or not.

Change-Id: Id9c1535164aebcb0cfd87ad24ab93ab404cf7192
Signed-off-by: Sandeep Singh <sandsing@codeaurora.org>