arm64: dts: exynos: correct wlf,micd-dbtime on TM2

The wlf,micd-dbtime property of WM5110 codec can be either 2 or 4
(driver ignores other values, so assume author wanted something here):

  exynos5433-tm2e.dtb: audio-codec@0: wlf,micd-dbtime:0:0: 1 is not one of [2, 4]

Link: https://lore.kernel.org/r/20230120173116.341270-6-krzysztof.kozlowski@linaro.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>