ARM: dts: at91: sama5d29_curiosity: Add device tree for sama5d29_curiosity board

Add initial device tree file for sama5d29_curiosity board.

Signed-off-by: Mihai Sain <mihai.sain@microchip.com>
Link: https://lore.kernel.org/r/20230919124606.26898-3-mihai.sain@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>