Kernel: Move all Graphics-related code into Devices/GPU directory

Like the HID, Audio and Storage subsystem, the Graphics subsystem (which
handles GPUs technically) exposes unix device files (typically in /dev).
To ensure consistency across the repository, move all related files to a
new directory under Kernel/Devices called "GPU".

Also remove the redundant "GPU" word from the VirtIO driver directory,
and the word "Graphics" from GraphicsManagement.{h,cpp} filenames.

Kernel/Arch/aarch64/kprintf.cpp

@@ -6,7 +6,7 @@
 
 #include <AK/Types.h>
 #include <Kernel/Arch/aarch64/RPi/UART.h>
-#include <Kernel/Graphics/Console/BootFramebufferConsole.h>
+#include <Kernel/Devices/GPU/Console/BootFramebufferConsole.h>
 #include <Kernel/kstdio.h>
 
 // FIXME: Merge the code in this file with Kernel/kprintf.cpp once the proper abstractions are in place.

Kernel/Arch/init.cpp

@@ -16,6 +16,9 @@
 #include <Kernel/Bus/VirtIO/Device.h>
 #include <Kernel/Devices/Audio/Management.h>
 #include <Kernel/Devices/DeviceManagement.h>
+#include <Kernel/Devices/GPU/Console/BootFramebufferConsole.h>
+#include <Kernel/Devices/GPU/Console/VGATextModeConsole.h>
+#include <Kernel/Devices/GPU/Management.h>
 #include <Kernel/Devices/Generic/DeviceControlDevice.h>
 #include <Kernel/Devices/Generic/FullDevice.h>
 #include <Kernel/Devices/Generic/MemoryDevice.h>
@@ -33,9 +36,6 @@
 #include <Kernel/FileSystem/VirtualFileSystem.h>
 #include <Kernel/Firmware/ACPI/Initialize.h>
 #include <Kernel/Firmware/ACPI/Parser.h>
-#include <Kernel/Graphics/Console/BootFramebufferConsole.h>
-#include <Kernel/Graphics/Console/VGATextModeConsole.h>
-#include <Kernel/Graphics/GraphicsManagement.h>
 #include <Kernel/Heap/kmalloc.h>
 #include <Kernel/KSyms.h>
 #include <Kernel/Library/Panic.h>

Kernel/Arch/x86_64/Hypervisor/BochsDisplayConnector.cpp

@@ -10,9 +10,9 @@
 #include <Kernel/Bus/PCI/Access.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Devices/DeviceManagement.h>
-#include <Kernel/Graphics/Bochs/Definitions.h>
-#include <Kernel/Graphics/Console/ContiguousFramebufferConsole.h>
-#include <Kernel/Graphics/GraphicsManagement.h>
+#include <Kernel/Devices/GPU/Bochs/Definitions.h>
+#include <Kernel/Devices/GPU/Console/ContiguousFramebufferConsole.h>
+#include <Kernel/Devices/GPU/Management.h>
 
 namespace Kernel {
 

Kernel/Arch/x86_64/Hypervisor/BochsDisplayConnector.h

@@ -7,9 +7,9 @@
 #pragma once
 
 #include <AK/Try.h>
-#include <Kernel/Graphics/Bochs/Definitions.h>
-#include <Kernel/Graphics/Console/GenericFramebufferConsole.h>
-#include <Kernel/Graphics/DisplayConnector.h>
+#include <Kernel/Devices/GPU/Bochs/Definitions.h>
+#include <Kernel/Devices/GPU/Console/GenericFramebufferConsole.h>
+#include <Kernel/Devices/GPU/DisplayConnector.h>
 #include <Kernel/Library/LockRefPtr.h>
 #include <Kernel/Locking/Spinlock.h>
 #include <Kernel/Memory/TypedMapping.h>