Yocto 2.4

Move OpenBMC to Yocto 2.4(rocko)

Tested: Built and verified Witherspoon and Palmetto images
Change-Id: I12057b18610d6fb0e6903c60213690301e9b0c67
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/import-layers/yocto-poky/bitbake/lib/bb/ui/uihelper.py b/import-layers/yocto-poky/bitbake/lib/bb/ui/uihelper.py
index 113fced..963c1ea 100644
--- a/import-layers/yocto-poky/bitbake/lib/bb/ui/uihelper.py
+++ b/import-layers/yocto-poky/bitbake/lib/bb/ui/uihelper.py
@@ -61,6 +61,9 @@
                 self.running_tasks[event.pid]['progress'] = event.progress
                 self.running_tasks[event.pid]['rate'] = event.rate
                 self.needUpdate = True
+        else:
+            return False
+        return True
 
     def getTasks(self):
         self.needUpdate = False