ARM: dts: samsung: s3c6410-mini6410: correct ethernet reg addresses (split)

The davicom,dm9000 Ethernet Controller accepts two reg addresses.

Fixes: a43736de

 ("ARM: dts: Add dts file for S3C6410-based Mini6410 board")
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20230713152926.82884-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>