flashing: add entry for SAM9X60
flashing: add entry for SAM9X60

Add entry for SAM9X60.

Signed-off-by: Claudiu Beznea <92a9d436f3b0502e1aa784f095132853060e6ace@microchip.com>

linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel