Adds verbosity to child cell update log messages

Child Cells frequently update their parents with their capabilities and
capacities. The debug log message contains the capabilities or capacities
that are being updated. This patch adds the names of the parent cells to
which the information is being sent to the debug log message.

Change-Id: Ic34191da191369e64a016c8300a8da294aaa9e07
Closes-Bug: 1351301
Merge "Adds verbosity to child cell update log messages"