arm, am335x: add support for 3 siemens boards

add support for the am335x based boards from siemens:

dxr2:
  - DDR3 128MiB
  - NAND 256MiB
  - Ethernet with external Switch SMSC LAN9303
  - no PMIC
  - internal Watchdog
  - DFU support

pxm2:
  - DDR2 512 MiB
  - NAND 1024 MiB
  - PMIC
  - PHY atheros ar803x
  - USB Host
  - internal Watchdog
  - DFU support

rut:
  - DDR3 256 MiB
  - NAND 256 MiB
  - PMIC
  - PHY natsemi dp83630
  - external Watchdog
  - DFU support

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Roger Meier <r.meier@siemens.com>
Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Cc: Pascal Bach <pascal.bach@siemens.com>
Cc: Tom Rini <trini@ti.com>
diff --git a/board/siemens/common/factoryset.h b/board/siemens/common/factoryset.h
new file mode 100644
index 0000000..445f384
--- /dev/null
+++ b/board/siemens/common/factoryset.h
@@ -0,0 +1,27 @@
+/*
+ * Common board functions for siemens AM335X based boards
+ * (C) Copyright 2013 Siemens Schweiz AG
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __FACTORYSET_H
+#define __FACTORYSET_H
+
+#define MAX_STRING_LENGTH	32
+
+struct factorysetcontainer {
+	uchar mac[6];
+	int usb_vendor_id;
+	int usb_product_id;
+	int pxm50;
+#if defined(CONFIG_VIDEO)
+	unsigned char disp_name[MAX_STRING_LENGTH];
+#endif
+};
+
+int factoryset_read_eeprom(int i2c_addr);
+int factoryset_setenv(void);
+extern struct factorysetcontainer factory_dat;
+
+#endif /* __FACTORYSET_H */