Change some log levels within the PDM callback handler

:Release Notes:
Do more logging at Notice and Info level within the HandleResult
method, upgrading the log levels of some currently Debug-level logging.

:Detailed Notes:

:Testing Performed:
Tested by attaching and detaching devices

:QA Notes:

:Issues Addressed:

Open-webOS-DCO-1.0-Signed-off-by: Roger Stringer <roger.stringer@lge.com>

Change-Id: I5c5cf1d14d425f4b6a03c85337da1da86376631c
Reviewed-on: https://g2g.palm.com/3211
Reviewed-by: Build Verification
Tested-by: Roger Stringer <roger.stringer@lge.com>
Reviewed-by: Alan Levi <alan.levi@lge.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>