ARM: at91: at91sam9x5 RTC is not compatible with at91rm9200 one

Due to a bug with RTC IMR, we cannot consider at91sam9x5 RTC compatible
with the previous one. Modify DT compatibility string, even if the driver
is not yet modified to take it into account.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91/at91-ariag25.dts: add RTC node

Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91/at91sam9x5.dtsi: add UART0/1 nodes

Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91/at91-ariag25.dts: UART0/1 nodes are disabled

UART0 is moved to generic at91sam9x5.dtsi file.
Both uarts are "disabled" as the corresponding pins on
Aria documentation are shown as GPIOs.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91: add Acme Systems Fox G20 board

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>