Drive code works on Tantrum.

Need to write the spring code.  Drive now supports doubles...  What a
pain.

Change-Id: Id589acdc443dcd81242a21e3b0c26f81d6974dc8
diff --git a/frc971/control_loops/BUILD b/frc971/control_loops/BUILD
index 360097d..5998afc 100644
--- a/frc971/control_loops/BUILD
+++ b/frc971/control_loops/BUILD
@@ -1,6 +1,7 @@
 package(default_visibility = ["//visibility:public"])
 
 load("//aos/build:queues.bzl", "queue_library")
+load("//tools:environments.bzl", "mcu_cpus")
 
 cc_library(
     name = "team_number_test_environment",
@@ -89,6 +90,21 @@
 )
 
 cc_library(
+    name = "coerce_goal_uc",
+    srcs = [
+        "coerce_goal.cc",
+    ],
+    hdrs = [
+        "coerce_goal.h",
+    ],
+    restricted_to = mcu_cpus,
+    deps = [
+        "//aos/common/controls:polytope_uc",
+        "//third_party/eigen",
+    ],
+)
+
+cc_library(
     name = "coerce_goal",
     srcs = [
         "coerce_goal.cc",