Kernel+Userland: Move prctl numbers header file to Kernel/API directory

Author: https://github.com/supercomputer7
Commit: e7142c482a
Pull-request: https://github.com/SerenityOS/serenity/pull/17599

Kernel/API/prctl_numbers.h

@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#define PR_SET_DUMPABLE 1
+#define PR_GET_DUMPABLE 2

Kernel/Syscalls/prctl.cpp

@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <Kernel/API/prctl_numbers.h>
 #include <Kernel/Process.h>
-#include <LibC/sys/prctl_numbers.h>
 
 namespace Kernel {