Kernel+Userland: Move LibC/sys/ioctl_numbers to Kernel/API/Ioctl.h

This header has always been fundamentally a Kernel API file. Move it
where it belongs. Include it directly in Kernel files, and make
Userland applications include it via sys/ioctl.h rather than directly.

Kernel/Devices/Audio/Channel.cpp

@@ -4,12 +4,12 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <Kernel/API/Ioctl.h>
 #include <Kernel/Devices/Audio/Management.h>
 #include <Kernel/Devices/DeviceManagement.h>
 #include <Kernel/Devices/RandomDevice.h>
 #include <Kernel/Random.h>
 #include <Kernel/Sections.h>
-#include <LibC/sys/ioctl_numbers.h>
 
 namespace Kernel {
 

Kernel/Devices/HID/KeyboardDevice.cpp

@@ -8,10 +8,10 @@
 
 #include <AK/Assertions.h>
 #include <AK/Types.h>
+#include <Kernel/API/Ioctl.h>
 #include <Kernel/Devices/HID/KeyboardDevice.h>
 #include <Kernel/Sections.h>
 #include <Kernel/TTY/VirtualConsole.h>
-#include <LibC/sys/ioctl_numbers.h>
 
 namespace Kernel {
 

Kernel/Devices/KCOVDevice.cpp

@@ -6,11 +6,11 @@
 
 #include <AK/Assertions.h>
 #include <AK/NonnullOwnPtr.h>
+#include <Kernel/API/Ioctl.h>
 #include <Kernel/Devices/DeviceManagement.h>
 #include <Kernel/Devices/KCOVDevice.h>
 #include <Kernel/Devices/KCOVInstance.h>
 #include <Kernel/FileSystem/OpenFileDescription.h>
-#include <LibC/sys/ioctl_numbers.h>
 
 #include <Kernel/Panic.h>