ARM: at91/defconfig: add at91rm9200 ethernet support

There is now only one defconfig for the at91rm9200 and at91sam9. Add ethernet
support for the at91rm9200.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
1 file changed