Add microchip,sam9x60-rtt to compatible list.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1591779936-18577-3-git-send-email-claudiu.beznea@microchip.com