Kernel: Move devices into Kernel/Devices/.

Kernel/Devices/Device.cpp

@@ -0,0 +1,28 @@
+#include "CharacterDevice.h"
+#include <LibC/errno_numbers.h>
+
+Device::Device(unsigned major, unsigned minor)
+     : m_major(major)
+     , m_minor(minor)
+{
+    VFS::the().register_device(*this);
+}
+
+Device::~Device()
+{
+    VFS::the().unregister_device(*this);
+}
+
+KResultOr<Retained<FileDescriptor>> Device::open(int options)
+{
+    return VFS::the().open(*this, options);
+}
+
+void Device::close()
+{
+}
+
+int Device::ioctl(Process&, unsigned, unsigned)
+{
+    return -ENOTTY;
+}