atoms: 'pasp' atom is also part of MP4, write it always

https://bugzilla.gnome.org/show_bug.cgi?id=769048
diff --git a/gst/isomp4/atoms.c b/gst/isomp4/atoms.c
index 338bae5..0709c56 100644
--- a/gst/isomp4/atoms.c
+++ b/gst/isomp4/atoms.c
@@ -4056,11 +4056,8 @@
   if (ext_atoms_list)
     ste->extension_atoms = g_list_concat (ste->extension_atoms, ext_atoms_list);
 
-  /* QT spec has a pasp extension atom in stsd that can hold PAR */
-  if (context->flavor == ATOMS_TREE_FLAVOR_MOV) {
-    ste->extension_atoms = g_list_append (ste->extension_atoms,
-        build_pasp_extension (par_n, par_d));
-  }
+  ste->extension_atoms = g_list_append (ste->extension_atoms,
+      build_pasp_extension (par_n, par_d));
 
   return ste;
 }