Kernel/VirtIO: Remove redundant VirtIO word from filenames

Now that all related VirtIO classes are in the VirtIO namespace, let's
just remove the redundant VirtIO word from filenames.

Kernel/Bus/VirtIO/RNG.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2021, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/RefCounted.h>
+#include <Kernel/Bus/VirtIO/Device.h>
+#include <Kernel/Devices/CharacterDevice.h>
+#include <Kernel/Random.h>
+
+namespace Kernel::VirtIO {
+
+#define REQUESTQ 0
+
+class RNG final
+    : public RefCounted<RNG>
+    , public VirtIO::Device {
+public:
+    virtual StringView purpose() const override { return class_name(); }
+
+    RNG(PCI::Address);
+    virtual ~RNG() override;
+
+private:
+    virtual StringView class_name() const override { return "VirtIOConsole"; }
+    virtual bool handle_device_config_change() override;
+    virtual void handle_queue_update(u16 queue_index) override;
+    void request_entropy_from_host();
+
+    OwnPtr<Memory::Region> m_entropy_buffer;
+    EntropySource m_entropy_source;
+};
+
+}