Suggested change to fix Due compile problem

Marlin/src/HAL/HAL_DUE/HAL_timers_Due.cpp

@@ -121,7 +121,7 @@ void HAL_timer_disable_interrupt(const uint8_t timer_num) {
   pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_IDR = TC_IDR_CPCS;
 }
 
-void HAL_timer_interrupt_enabled(const uint8_t timer_num) {
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
   const tTimerConfig * const pConfig = &TimerConfig[timer_num];
   return pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_IER == TC_IER_CPCS;
 }