at91sam9260 wakeup on serial port

[michael]

Hi,
I implement a little patch (ndr just for a try) for the atmel serial 
driver atmel_serial.c to wakeup the system when it is in suspend-ram state.
I reconfigure the RXD pin as a gpio in suspend function and restore it 
in the resume function. It is the correct way?

Regards Michael

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