ARM: 5913/1: ARM U8500: add I2C platform configurations

This adds platform configurations to support four
i2c controllers found on early MOP500 platform

This depends on the patch 5908/1 for build to succeed.

Signed-off-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>