dt-bindings: ARM: at91: Document Microchip SAMA7G54 Curiosity

Document device tree binding of the Microchip SAMA7G54 Curiosity board.

Signed-off-by: Mihai Sain <mihai.sain@microchip.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240215091524.14732-2-mihai.sain@microchip.com


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