HO: clearly mark conn penalty timer member for hodec2

The conn's penalty timers will be used only for handover decision 2, make it
clear by a sub-struct.

hodec2 will also initialize the penalty timer list on demand only, so no need
to always initialize.

Change-Id: Ie6c2bc2b10dc424dfd94a9e11a9a62f51c48aa10
2 files changed