Move aos/controls to frc971/control_loops

Also put what was aos/controls/control_loops.fbs in y2012/control_loops
because that's the only user.

Change-Id: I8f402b0708103077e135a41e55ef5e4f23681d87
Signed-off-by: James Kuszmaul <jabukuszmaul@gmail.com>
diff --git a/y2018/control_loops/superstructure/intake/BUILD b/y2018/control_loops/superstructure/intake/BUILD
index c49b80b..fa4eb7e 100644
--- a/y2018/control_loops/superstructure/intake/BUILD
+++ b/y2018/control_loops/superstructure/intake/BUILD
@@ -43,7 +43,7 @@
     deps = [
         ":intake_plants",
         "//aos:math",
-        "//aos/controls:control_loop",
+        "//frc971/control_loops:control_loop",
         "//frc971/control_loops:control_loops_fbs",
         "//frc971/zeroing",
         "//y2018:constants",
diff --git a/y2018/control_loops/superstructure/intake/intake.h b/y2018/control_loops/superstructure/intake/intake.h
index e064c0e..7bc3986 100644
--- a/y2018/control_loops/superstructure/intake/intake.h
+++ b/y2018/control_loops/superstructure/intake/intake.h
@@ -4,7 +4,7 @@
 #include <math.h>
 
 #include "aos/commonmath.h"
-#include "aos/controls/control_loop.h"
+#include "frc971/control_loops/control_loop.h"
 #include "frc971/zeroing/wrap.h"
 #include "frc971/zeroing/zeroing.h"
 #include "y2018/constants.h"
@@ -46,7 +46,7 @@
   double goal_angle(const double *unsafe_goal);
 
   constexpr static double kDt =
-      ::aos::time::DurationInSeconds(::aos::controls::kLoopFrequency);
+      ::aos::time::DurationInSeconds(::frc971::controls::kLoopFrequency);
 
   // Sets the offset of the controller to be the zeroing estimator offset when
   // possible otherwise zero.