Hob: Add stop button for parsing progress

Add a Stop button to allow user to quit the parsing process.

(Bitbake rev: a1936ff544f21cde0765f24dc9b0af126ca98752)

Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

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

@@ -371,6 +371,9 @@ class HobHandler(gobject.GObject):
         self.commands_async = []
         self.building = False
 
+    def cancel_parse(self):
+        self.server.runCommand(["stateStop"])
+
     def cancel_build(self, force=False):
         if force:
             # Force the cooker to stop as quickly as possible