ARM: 5908/1: nomadik: add platform specific i2c configuration

This adds the platform specific i2c configuration
data structures to setup the nomadik/ux500 i2c block.
Signed-off-by: Nsrinidhi kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/plat-nomadik/include/plat/i2c.h

+/*
+ * Copyright (C) 2009 ST-Ericsson
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ */
+#ifndef __PLAT_I2C_H
+#define __PLAT_I2C_H
+
+enum i2c_freq_mode {
+	I2C_FREQ_MODE_STANDARD,		/* up to 100 Kb/s */
+	I2C_FREQ_MODE_FAST,		/* up to 400 Kb/s */
+	I2C_FREQ_MODE_FAST_PLUS,	/* up to 1 Mb/s */
+	I2C_FREQ_MODE_HIGH_SPEED	/* up to 3.4 Mb/s */
+};
+
+/**
+ * struct nmk_i2c_controller - client specific controller configuration
+ * @clk_freq:	clock frequency for the operation mode
+ * @slsu:	Slave data setup time in ns.
+ *		The needed setup time for three modes of operation
+ *		are 250ns, 100ns and 10ns respectively thus leading
+ *		to the values of 14, 6, 2 for a 48 MHz i2c clk
+ * @tft:	Tx FIFO Threshold in bytes
+ * @rft:	Rx FIFO Threshold in bytes
+ * @sm:		speed mode
+ */
+struct nmk_i2c_controller {
+	unsigned long	clk_freq;
+	unsigned short	slsu;
+	unsigned char 	tft;
+	unsigned char 	rft;
+	enum i2c_freq_mode	sm;
+};
+
+#endif	/* __PLAT_I2C_H */