Add identifier to ErrPrint API

:Release Notes:
Identifier "[PmLog]" added to ErrPrint and DbgPrint APIs.

:Detailed Notes:
Local APIs ErrPrint and DbgPrint will add identifier "[pmlog]".
So, that logs will be recorded at /var/log/messages.
Additionally, a carriage return addded ErrPrint when DEBUG_ENABLED
flag is on. In the exisiting code, it prints 2 stderr message on
one line.

:Testing Performed:
Compiled locally and tested on locally.
Verified in the log file, properly displayed at /var/log/messages.

:QA Notes:

:Issues Addressed:
[GF-9252] Add [pmlog] identifier to ErrPrint

Open-webOS-DCO-1.0-Signed-off-by: Hongjeon Ha <hj.ha@lge.com>

Change-Id: If443abb7428de8156b8775b7affd58dc22c5b0e2
Reviewed-on: https://g2g.palm.com/2906
Reviewed-by: Build Verification
Reviewed-by: Hongjeon Ha <hj.ha@lge.com>
Tested-by: Hongjeon Ha <hj.ha@lge.com>
Reviewed-by: Gayathri Srinivasan <gayathri.srinivasan@lge.com>
Reviewed-by: Keith Derrick <keith.derrick@lge.com>