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This patch cleans up i2c_pxa_probe() function,

 - Use devm_ variants wherever
   This will clean both probe exit and i2c_pxa_remove() functions

 - Check platform resource before parsing any other data from DT/platform

 - Use dev_err on failure from i2c_add_numbered_adapter()

 - Use pr_info instead of printk for KERN_INFO
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
[wsa: removed unneeded error prinout after devm_ioremap_resource]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>