drm/gma500/psb: Make use of generic clock code

Add chip specific callbacks for the generic and non-generic clock
calculation code. Also remove as much dupilicated code as possible.

Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>

drivers/gpu/drm/gma500/psb_device.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright © 2013 Patrik Jakobsson
+ * Copyright © 2011 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _PSB_DEVICE_H_
+#define _PSB_DEVICE_H_
+
+extern const struct gma_clock_funcs psb_clock_funcs;
+
+#endif