TODO:
* General clean up
* Find out and fix why MS not resetting Neighbour List to BA(GPRS) when
empty NC_Frequency_List is sent in Packet Measurement Order.
* Fix MS most of the time not sending Neighbour report for cells not
present in SI2, probably due to waiting not enough time (increasing
NC_REPORTING_PERIOD_T may help, but then problem in previous point above
may show up more). Also maybe waiting for several reports before
continuing may also help.
* Configurable/dynamic chunk list size currently hardcoded to 5.
Improvements/optimizations:
* Use FREQUENCY_DIFF in Add_Frequency for NC_Frequency_List to make
it smaller and hence require less PAcketMeasurementOrder messages.
* Support Enchanced Packet Report message (need to signal support for it
too).
Related: SYS#5303
Change-Id: I051d4fa90fe4ccc44ea691f8a3a487e97868e52c