ARM: dts: samsung: exynos4412-midas: fix key-ok event code

Input event code 139 stands for KEY_MENU, instead of KEY_OK as node name
key-ok inplies. Fix it with correct event code 0x160.

Signed-off-by: Raymond Hackley <raymondhackley@protonmail.com>
Link: https://lore.kernel.org/r/20231017101636.62755-1-raymondhackley@protonmail.com


[krzysztof: use KEY_OK constant instead of raw value]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>