ARM: at91: Simplify with scoped for each OF child loop

ARM: at91: Simplify with scoped for each OF child loop

Use scoped for-each loop when iterating over device nodes to make code a
bit simpler.

Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Link: https://patch.msgid.link/20260109-of-for-each-compatible-scoped-v3-2-c22fa2c0749a@oss.qualcomm.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>