ARM: dts: ixp4xx: use "okay" for status

"okay" over "ok" is preferred for status property.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230127101832.93789-1-krzysztof.kozlowski@linaro.org


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230310231420.583121-1-linus.walleij@linaro.org


Signed-off-by: Arnd Bergmann <arnd@arndb.de>