Xtra client always reports carrier as 'unknown'

The problem was caused by populating the carrier upon phone bootup
when the the property maybe not initialized yet. This module is
updated to remove the populating code of carrier in phone bootup.

Change-Id: I9c3f970aa0f0ca0805fdc2e04aa809329b6a2676
CRs-fixed: 935146
1 file changed