Kernel: Move ExecutionMode.h to the Security subdirectory

Author: https://github.com/supercomputer7
Commit: c9a34cae66
Pull-request: https://github.com/SerenityOS/serenity/pull/17604
Reviewed-by: https://github.com/gmta ✅
Reviewed-by: https://github.com/kleinesfilmroellchen ✅

Kernel/Arch/PageFault.h

@@ -9,8 +9,8 @@
 #include <AK/Platform.h>
 #include <AK/Types.h>
 #include <Kernel/Arch/RegisterState.h>
-#include <Kernel/ExecutionMode.h>
 #include <Kernel/Memory/VirtualAddress.h>
+#include <Kernel/Security/ExecutionMode.h>
 
 namespace Kernel {