androidmedia: Read max-input-size from caps

max-input-size contains the suggested input buffer size that appears in
some containers. This size is needed by some decoders to do proper input
buffer size calculations.
Merge pull request #5 from alfonsosanchezbeato/read-caps-bufsize

androidmedia: Read max-input-size from caps
Expose the video height/width via plugin properties.
Merge branch 'master' of github.com:jhodapp/gst-plugins-bad