dt-bindings: atmel-sysreg: add sama7d65 RAM and PIT

Add SAMA7D65 RAM controller, PIT64 DT bindings.

Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/96e64f01eee264ad0ac4c720a7a1cab4f95c206b.1733505542.git.Ryan.Wanner@microchip.com
[claudiu.beznea: add missing space]
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>

Author: Dharma Balasubiramani

Documentation/devicetree/bindings/arm/atmel-sysregs.txt

@@ -13,6 +13,7 @@ PIT Timer required properties:
 PIT64B Timer required properties:
 - compatible: Should be "microchip,sam9x60-pit64b" or
 			"microchip,sam9x7-pit64b", "microchip,sam9x60-pit64b"
+			"microchip,sama7d65-pit64b", "microchip,sam9x60-pit64b"
 - reg: Should contain registers location and length
 - interrupts: Should contain interrupt for PIT64B timer
 - clocks: Should contain the available clock sources for PIT64B timer.
@@ -27,12 +28,13 @@ Its subnodes can be:
 - watchdog: compatible should be "atmel,at91rm9200-wdt"
 
 RAMC SDRAM/DDR Controller required properties:
-- compatible: Should be "atmel,at91rm9200-sdramc", "syscon"
-			"atmel,at91sam9260-sdramc",
-			"atmel,at91sam9g45-ddramc",
-			"atmel,sama5d3-ddramc",
-			"microchip,sam9x60-ddramc",
-			"microchip,sama7g5-uddrc",
+- compatible: Should be "atmel,at91rm9200-sdramc", "syscon" or
+			"atmel,at91sam9260-sdramc" or
+			"atmel,at91sam9g45-ddramc" or
+			"atmel,sama5d3-ddramc" or
+			"microchip,sam9x60-ddramc" or
+			"microchip,sama7g5-uddrc" or
+			"microchip,sama7d65-uddrc", "microchip,sama7g5-uddrc" or
 			"microchip,sam9x7-ddramc", "atmel,sama5d3-ddramc".
 - reg: Should contain registers location and length