[tsmeta] Add timesys layer backfill.

classes/tsmeta.bbclass

@@ -735,14 +735,20 @@ def tsmeta_git_branch_info(d, path):
 def tsmeta_collect_layers(d):
     layer_dict = dict()
     bspdir = d.getVar('BSPDIR')
+
+    def _layer_info(lpath):
+        ldict = tsmeta_git_branch_info(d, lpath)
+        ldict['path'] = os.path.relpath(lpath, bspdir)
+        return ldict
+
     for lname in d.getVar('BBFILE_COLLECTIONS').split():
         pattern = d.getVar('_'.join(['BBFILE_PATTERN', lname]))
         full_path = os.path.normpath(pattern.split('^')[-1])
-        rel_path = os.path.relpath(full_path, bspdir)
-        layer_dict[lname] = {
-            'path': rel_path,
-        }
-        layer_dict[lname].update(tsmeta_git_branch_info(d, full_path))
+        layer_dict[lname] = _layer_info(full_path)
+
+    if 'timesys' not in layer_dict:
+        meta_timesys_dir = d.getVar('VIGILES_LAYERDIR')
+        layer_dict['timesys'] = _layer_info(meta_timesys_dir)
 
     return layer_dict