Make drivetrain current limits use the constants

Signed-off-by: Maxwell Henderson <mxwhenderson@gmail.com>
Change-Id: I3be805941a01ec42a7ee2bc1095d131661e22668
diff --git a/y2024/constants/constants.fbs b/y2024/constants/constants.fbs
index 54e6925..4a40487 100644
--- a/y2024/constants/constants.fbs
+++ b/y2024/constants/constants.fbs
@@ -50,6 +50,8 @@
   intake_roller_stator_current_limit:double (id: 3);
   transfer_roller_supply_current_limit:double (id: 4);
   transfer_roller_stator_current_limit:double (id: 5);
+  drivetrain_supply_current_limit:double (id: 6);
+  drivetrain_stator_current_limit:double (id: 7);
 }
 
 table TransferRollerVoltages {