DO NOT MERGE - IAudioFlinger: add checks on binder calls

Limit number of ports and patches listed by
LIST_AUDIO_PATCHES and LIST_AUDIO_PORTS.

Also fix typo causing wrong pointer to be used when writing to Parcel.

Bug: 19573085.
Change-Id: I41a9c710e45738a4f11990160587856c429a4646
(cherry picked from commit f75c2fef)