Kernel/PCI: Remove InterruptDisabler usage

Instead, just ensure we pick the m_access_lock and then m_scan_lock when
doing a scan/re-scan of the PCI configuration space so we know nobody
can actually access the PCI configuration space during the scan.

The m_scan_lock is now a Spinlock, to ensure we cannot yield to other
process while we do the PCI configuration space scanning.

Kernel/Bus/PCI/Access.h

@@ -11,6 +11,7 @@
 #include <AK/Vector.h>
 #include <Kernel/Bus/PCI/Definitions.h>
 #include <Kernel/FileSystem/SysFS.h>
+#include <Kernel/Locking/Spinlock.h>
 
 namespace Kernel::PCI {
 
@@ -82,7 +83,7 @@ private:
 
     // General Data-members
     mutable Mutex m_access_lock;
-    mutable Mutex m_scan_lock;
+    mutable Spinlock m_scan_lock;
     Bitmap m_enumerated_buses;
     AccessType m_access_type;
     Vector<DeviceIdentifier> m_device_identifiers;