dma.8: Add FreeBSD to HISTORY

I want to do this in FreeBSD, does upstream want it too?

Author: concussious

dma.8

@@ -381,7 +381,9 @@ Default deffered mail queue, see
 The
 .Nm
 utility first appeared in
-.Dx 1.11 .
+.Dx 1.11
+and
+.Fx 11.0 .
 .Sh AUTHORS
 .An -nosplit
 .Nm