Include broadcast-time as source for time-sync

:Release Notes:
Added using of broadcast-time as a source for time-synchronization
when "useNetworkTime" is turned on.

:Detailed Notes:
Hook on old NTP code to synchronize system time with saved broadcast
time.

:Testing Performed:
Desktop build

:QA Notes:

:Issues Addressed:
[GF-42286] System time should be able to sync from broadcast signal

Open-webOS-DCO-1.0-Signed-off-by: Nikolay Orliuk <nikolay.orliuk@lge.com>
Change-Id: I368c890b4bdff0f26a841b6c1e37251a02c18012
Reviewed-on: https://g2g.palm.com/3655
Reviewed-by: Nikolay Orliuk <nikolay.orliuk@lge.com>
Tested-by: Nikolay Orliuk <nikolay.orliuk@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Keith Derrick <keith.derrick@lge.com>