Revert change to AXIS_DRIVER_TYPE_X2

- Revisit this to figure out why it breaks

Marlin/src/core/drivers.h

@@ -58,11 +58,7 @@
 #define AXIS_DRIVER_TYPE_Y(T) _AXIS_DRIVER_TYPE(Y,T)
 #define AXIS_DRIVER_TYPE_Z(T) _AXIS_DRIVER_TYPE(Z,T)
 
-#if EITHER(X_DUAL_STEPPER_DRIVERS, DUAL_X_CARRIAGE)
-  #define AXIS_DRIVER_TYPE_X2(T) _AXIS_DRIVER_TYPE(X2,T)
-#else
-  #define AXIS_DRIVER_TYPE_X2(T) false
-#endif
+#define AXIS_DRIVER_TYPE_X2(T) (EITHER(X_DUAL_STEPPER_DRIVERS, DUAL_X_CARRIAGE) && _AXIS_DRIVER_TYPE(X2,T))
 #define AXIS_DRIVER_TYPE_Y2(T) (ENABLED(Y_DUAL_STEPPER_DRIVERS) && _AXIS_DRIVER_TYPE(Y2,T))
 #define AXIS_DRIVER_TYPE_Z2(T) (NUM_Z_STEPPER_DRIVERS >= 2 && _AXIS_DRIVER_TYPE(Z2,T))
 #define AXIS_DRIVER_TYPE_Z3(T) (NUM_Z_STEPPER_DRIVERS >= 3 && _AXIS_DRIVER_TYPE(Z3,T))