Add "dummy" changes file for 5.1.1

Change-Id: I437ad3c1c85ab0daf102921a40de83e161b5a5da
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
Merge remote-tracking branch 'origin/release' into stable

Change-Id: I7dfbb5305647cf87e36948345df2255c16f27596
Merge remote-tracking branch 'origin/stable' into dev

Change-Id: Ida4930084e35478af9ceb26107434bd42c33d2a3