live: add audio/L24

This requires a bleeding edge liblive555 - not tested.
(cherry picked from commit 4089fc27c4dad3b25f64eeb9773c9c8b5d982980)

modules/demux/live555.cpp

@@ -813,6 +813,11 @@ static int SessionsSetup( demux_t *p_demux )
                     tk->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
                     tk->fmt.audio.i_bitspersample = 16;
                 }
+                else if( !strcmp( sub-codecName(), "L24" ) )
+                {
+                    tk->fmt.i_codec = VLC_CODEC_S24B;
+                    tk->fmt.audio.i_bitspersample = 24;
+                }
                 else if( !strcmp( sub->codecName(), "L8" ) )
                 {
                     tk->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );