xmltv: moved from 0.5.54 to 0.5.56

diff --git a/recipes/xmltv/xmltv_0.5.54.bb b/recipes/xmltv/xmltv_0.5.56.bb
similarity index 100%
rename from recipes/xmltv/xmltv_0.5.54.bb
rename to recipes/xmltv/xmltv_0.5.56.bb