Debugger: Move some generic helper function to base dumper

Change-Id: I78dea9af7d397d49ce2b54086d275413f2477626
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Disable LLDB's own visualizers.

Stop-gap measure until we can properly co-exist.

Change-Id: Ia6699eb7261e480587f6a21d54fb6b6107669b8f
Reviewed-by: hjk <hjk121@nokiamail.com>