Original commit message from CVS:
Patch by: Daniel Charles <dcharles at ti dot com>
* ext/amrwb/gstamrwbenc.c: (gst_amrwbenc_bandmode_get_type),
(gst_amrwbenc_set_property), (gst_amrwbenc_get_property),
(gst_amrwbenc_class_init), (gst_amrwbenc_chain):
* ext/amrwb/gstamrwbenc.h:
Add property to control bandmode. Fixes#477306.