sysreset: at91: add compatible with microchip, sama7g5-rstc

As documented in bindings doc in kernel 6.0:
https://elixir.bootlin.com/linux/v6.0/source/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
1 file changed