[I2C] Split mv643xx I2C platform support

The motivation for this change is to allow other chips, like the
Marvell Orion ARM SoC family, to use the existing i2c-mv64xxx driver.

Signed-off-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Nicolas Pitre <nico@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Acked-by: Jean Delvare <khali@linux-fr.org>

include/linux/mv643xx_i2c.h

@@ -0,0 +1,23 @@
+/*
+ * 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.
+ */
+
+#ifndef _MV64XXX_I2C_H_
+#define _MV64XXX_I2C_H_
+
+#include <linux/types.h>
+
+#define MV64XXX_I2C_CTLR_NAME	"mv64xxx_i2c"
+
+/* i2c Platform Device, Driver Data */
+struct mv64xxx_i2c_pdata {
+	u32	freq_m;
+	u32	freq_n;
+	u32	timeout;	/* In milliseconds */
+	u32	retries;
+};
+
+#endif /*_MV64XXX_I2C_H_*/