i2c-eg20t: regression since i2c_add_numbered_adapter change

[Alexander Stein]

Hello,

I just noticed the 3.4 linux kernel fails to sucessfully probe the i2c-eg20t 
driver. I returns with EBUSY error. It worked on the 3.0 kernel. To my view it 
is caused the commit 07e8a51ff68353e01d795cceafbac9f54c49132b ( i2c-eg20t: use 
i2c_add_numbered_adapter to get a fixed bus number).
The reason it actually fails is that the i2c-isch driver is registered 
beforehand which gets bus number 0. But this one is the bus number the eg20t 
driver wants to register.
A possibility is that if i2c_add_numbered_adapter failed with EBUSY just use 
i2c_add_adapter to get at least the driver working, but with a non-fixed bus 
number. Opinions?

Best regards,
Alexander

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