Added DMA and DMA synchronizer.

Pulled the dma setters out of year specific.

Change-Id: I4e797df52aa07edb5515f941113e7b43747622c9
diff --git a/frc971/wpilib/BUILD b/frc971/wpilib/BUILD
index 910de08..00cd77d 100644
--- a/frc971/wpilib/BUILD
+++ b/frc971/wpilib/BUILD
@@ -287,9 +287,11 @@
     ],
     restricted_to = ["//tools:roborio"],
     deps = [
-        "//aos:init",
-        "//aos/time:time",
         "//aos/stl_mutex",
+        "//aos/time:time",
+        "//aos:init",
         "//third_party:wpilib",
+        ":dma",
+        ":dma_edge_counting",
     ],
 )