hoblistmodel.py: description for selfcreated image

The current description is empty. This adds a default
description for hob's dummy_image.

(Bitbake rev: 68a65e5eeeb01d78444f1e5b5d1bb7b21c9d0b2c)

Signed-off-by: Beth Flanagan <elizabeth.flanagan@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/ui/crumbs/hoblistmodel.py

@@ -565,7 +565,9 @@ class RecipeListModel(gtk.ListStore):
 
         # dummy image for prompt
         self.set(self.append(), self.COL_NAME, self.__dummy_image__,
-                 self.COL_DESC, "",
+                 self.COL_DESC, "Use the 'View recipes' and 'View packages' " \
+                                "options to select what you want to include " \
+                                "in your image.",
                  self.COL_LIC, "", self.COL_GROUP, "",
                  self.COL_DEPS, "", self.COL_BINB, "",
                  self.COL_TYPE, "image", self.COL_INC, False,