Add arch_framebuffer.h for ppc

* should fix the build

src/system/boot/arch/ppc/arch_framebuffer.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2011-2012 Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Alexander von Gluck IV, kallisti5@unixzen.com
+ */
+#ifndef _ARCH_FRAMEBUFFER_H
+#define _ARCH_FRAMEBUFFER_H
+
+
+#include <boot/platform.h>
+#include <SupportDefs.h>
+
+
+#define TRACE_VIDEO
+#ifdef TRACE_VIDEO
+#   define TRACE(x...) dprintf(x)
+#	define CALLED() dprintf("%s()\n", __func__);
+#else
+#   define TRACE(x...) ;
+#	define CALLED() ;
+#endif
+#define ERROR(x...) dprintf(x)
+
+
+class ArchFramebuffer {
+public:
+							ArchFramebuffer(addr_t base)
+								:
+								fBase(base) {};
+							~ArchFramebuffer() {};
+
+	virtual status_t		Init() { return B_OK; };
+	virtual status_t		Probe() { return B_OK; };
+	virtual status_t		SetDefaultMode() { return B_OK; };
+	virtual status_t		SetVideoMode(int width, int height, int depth)
+								{ return B_OK; };
+
+	virtual addr_t			Base() { return fBase; };
+
+protected:
+			addr_t			fBase;
+private:
+			int				fCurrentWidth;
+			int				fCurrentHeight;
+			int				fCurrentDepth;
+};
+
+
+#endif /* _ARCH_FRAMEBUFFER_H */