ARM: dts: microchip: sama7g54_curiosity: Add initial device tree of the board

Add initial device tree of the SAMA7G54 Curiosity board.

Signed-off-by: Mihai Sain <mihai.sain@microchip.com>
Link: https://lore.kernel.org/r/20240215091524.14732-4-mihai.sain@microchip.com


Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>