NotificationManagerService: notifications with icon==0 are FINE WITH US

This warning reminds me of that saying about squeaky wheels... "the squeaky wheel gets PUNCHED IN THE HEAD"

Change-Id: I3e1a1e55ce3ce1f70c7b187a237625257bdbd591
Merge "NotificationManagerService: notifications with icon==0 are FINE WITH US" into kk4.4