ARM: dts: microchip: add sama7d65 SoC DT

Add Device Tree for sama7d65 SoC.

Co-developed-by: Dharma Balasubiramani <dharma.b@microchip.com>
Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Co-developed-by: Romain Sioen <romain.sioen@microchip.com>
Signed-off-by: Romain Sioen <romain.sioen@microchip.com>
Co-developed-by: Varshini Rajendran <varshini.rajendran@microchip.com>
Signed-off-by: Varshini Rajendran <varshini.rajendran@microchip.com>
Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Link: https://lore.kernel.org/r/20250107160850.120537-5-Ryan.Wanner@microchip.com


[claudiu.beznea: dropped comma typo from copyright, dropped space in
 front of slow_xtal node, dropped empty space after slow_xtal node]
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>