Kernel: Mark Console::{hide,show}_cursor methods protected

Only the Console code in the Graphics directory should be able to call
on these methods. The set_cursor method stays public as VirtualConsole
uses that method to change the cursor position.

Kernel/Graphics/Console/Console.h

@@ -50,8 +50,6 @@ public:
     virtual bool has_hardware_cursor() const = 0;
 
     virtual void set_cursor(size_t x, size_t y) = 0;
-    virtual void hide_cursor() = 0;
-    virtual void show_cursor() = 0;
 
     virtual void clear(size_t x, size_t y, size_t length) = 0;
     virtual void write(size_t x, size_t y, char ch, Color background, Color foreground, bool critical = false) = 0;
@@ -62,6 +60,9 @@ public:
     virtual ~Console() = default;
 
 protected:
+    virtual void hide_cursor() = 0;
+    virtual void show_cursor() = 0;
+
     Console(size_t width, size_t height)
         : m_width(width)
         , m_height(height)

Kernel/Graphics/Console/GenericFramebufferConsole.h

@@ -24,8 +24,6 @@ public:
     virtual bool has_hardware_cursor() const override { return false; }
 
     virtual void set_cursor(size_t x, size_t y) override;
-    virtual void hide_cursor() override;
-    virtual void show_cursor() override;
 
     virtual void clear(size_t x, size_t y, size_t length) override;
     virtual void write(size_t x, size_t y, char ch, Color background, Color foreground, bool critical = false) override;
@@ -38,6 +36,9 @@ public:
     virtual void set_resolution(size_t width, size_t height, size_t pitch) = 0;
 
 protected:
+    virtual void hide_cursor() override;
+    virtual void show_cursor() override;
+
     GenericFramebufferConsoleImpl(size_t width, size_t height, size_t pitch)
         : Console(width, height)
         , m_pitch(pitch)

Kernel/Graphics/Console/VGATextModeConsole.h

@@ -21,8 +21,6 @@ public:
 
     virtual size_t bytes_per_base_glyph() const override { return 2; }
     virtual void set_cursor(size_t x, size_t y) override;
-    virtual void hide_cursor() override;
-    virtual void show_cursor() override;
     virtual void clear(size_t x, size_t y, size_t length) override;
     virtual void write(size_t x, size_t y, char ch, bool critical = false) override;
     virtual void write(size_t x, size_t y, char ch, Color background, Color foreground, bool critical = false) override;
@@ -33,6 +31,9 @@ public:
     virtual void disable() override { }
 
 private:
+    virtual void hide_cursor() override;
+    virtual void show_cursor() override;
+
     void clear_vga_row(u16 row);
 
     explicit VGATextModeConsole(NonnullOwnPtr<Memory::Region>);