Move some DrivetrainConfig types to flatbuffers

This makes it so that we can start to implement the DrivetrainConfig as
a flatbuffer.

Change-Id: I69b92fcc436e82662d01a329d048a80c67267267
Signed-off-by: James Kuszmaul <jabukuszmaul+collab@gmail.com>
diff --git a/y2016/control_loops/drivetrain/drivetrain_base.cc b/y2016/control_loops/drivetrain/drivetrain_base.cc
index 208c843..978680c 100644
--- a/y2016/control_loops/drivetrain/drivetrain_base.cc
+++ b/y2016/control_loops/drivetrain/drivetrain_base.cc
@@ -22,10 +22,10 @@
 
 const DrivetrainConfig<double> &GetDrivetrainConfig() {
   static DrivetrainConfig<double> kDrivetrainConfig{
-      ::frc971::control_loops::drivetrain::ShifterType::HALL_EFFECT_SHIFTER,
-      ::frc971::control_loops::drivetrain::LoopType::CLOSED_LOOP,
-      ::frc971::control_loops::drivetrain::GyroType::SPARTAN_GYRO,
-      ::frc971::control_loops::drivetrain::IMUType::IMU_X,
+      ::frc971::control_loops::drivetrain::ShifterType::kHallEffectShifter,
+      ::frc971::control_loops::drivetrain::LoopType::kClosedLoop,
+      ::frc971::control_loops::drivetrain::GyroType::kSpartanGyro,
+      ::frc971::control_loops::drivetrain::ImuType::kImuX,
 
       drivetrain::MakeDrivetrainLoop,
       drivetrain::MakeVelocityDrivetrainLoop,