fixup! sched: add changes file (spaces)

changes/ticket12541

@@ -5,7 +5,7 @@
 
       http://www.robgjansen.com/publications/kist-sec2014.pdf
       https://arxiv.org/abs/1709.01044
-      
+
       This is also a major refactoring of the entire scheduler subsystem in
       order for it to be more modular and thus much more easier to add more
       scheduler type later. The current scheduler has been named "Vanilla" but
@@ -16,7 +16,7 @@
       It is also possible to change it at runtime. It is an ordered list by
       priority. KIST might not be available on all platforms so there is a
       fallback to "KISTLite" that uses the same mechanisms but without the
-      kernel support. 
+      kernel support.
 
       The current default values are: Schedulers KIST,KISTLite,Vanilla.