dt-bindings: net: sun8i-emac: Add A523 EMAC0 compatible

Allwinner A523 SoC variant (A527/T527) contains an "EMAC0" Ethernet
MAC compatible to the A64 version.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Yixun Lan <dlan@gentoo.org>
Link: https://patch.msgid.link/20250430-01-sun55i-emac0-v3-2-6fc000bbccbd@gentoo.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>