Kernel: Fix assertion statement in GenericInterruptHandler

We need to assert if interrupts are not disabled when changing the
interrupt number of an interrupt handler.
Before this fix, any change like this would lead to a crash,
because we are using InterruptDisabler in IRQHandler::change_irq_number.

Kernel/Interrupts/GenericInterruptHandler.cpp

@@ -56,7 +56,7 @@ GenericInterruptHandler::~GenericInterruptHandler()
 
 void GenericInterruptHandler::change_interrupt_number(u8 number)
 {
-    ASSERT_INTERRUPTS_ENABLED();
+    ASSERT_INTERRUPTS_DISABLED();
     ASSERT(!m_disable_remap);
     unregister_generic_interrupt_handler(InterruptManagement::acquire_mapped_interrupt_number(interrupt_number()), *this);
     m_interrupt_number = number;