Kernel: Update PCI::Device class to use the new IRQHandler class

Author: https://github.com/supercomputer7
Commit: 73a7e5875e
Pull-request: https://github.com/SerenityOS/serenity/pull/1274
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/shannonbooth

Kernel/PCI/Device.h

@@ -27,10 +27,11 @@
 #pragma once
 
 #include <AK/Types.h>
-#include <Kernel/InterruptHandler.h>
+#include <Kernel/Interrupts/IRQHandler.h>
 #include <Kernel/PCI/Definitions.h>
 
-class PCI::Device : public InterruptHandler {
+namespace Kernel {
+class PCI::Device : public IRQHandler {
 public:
     Address get_pci_address() const { return m_pci_address; };
 
@@ -42,3 +43,4 @@ protected:
 private:
     Address m_pci_address;
 };
+}