Add support for the 8568 MDS board

This included some changes to common files:
* Add 8568 processor SVR to various places
* Add support for setting the qe bus-frequency value in the dts
* Add the 8568MDS target to the Makefile

Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/board/mpc8568mds/bcsr.c b/board/mpc8568mds/bcsr.c
new file mode 100644
index 0000000..2e2e8cd
--- /dev/null
+++ b/board/mpc8568mds/bcsr.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2007 Freescale Semiconductor.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include "bcsr.h"
+
+void enable_8568mds_duart()
+{
+	volatile uint* duart_mux	= (uint *)(CFG_CCSRBAR + 0xe0060);
+	volatile uint* devices		= (uint *)(CFG_CCSRBAR + 0xe0070);
+	volatile u8 *bcsr		= (u8 *)(CFG_BCSR);
+
+	*duart_mux = 0x80000000;	/* Set the mux to Duart on PMUXCR */
+	*devices  = 0;			/* Enable all peripheral devices */
+	bcsr[5] |= 0x01;		/* Enable Duart in BCSR*/
+}
+
+void enable_8568mds_flash_write()
+{
+	volatile u8 *bcsr = (u8 *)(CFG_BCSR);
+
+	bcsr[9] |= 0x01;
+}
+
+void disable_8568mds_flash_write()
+{
+	volatile u8 *bcsr = (u8 *)(CFG_BCSR);
+
+	bcsr[9] &= ~(0x01);
+}