The function number should be FUNC_NUM_MIC_ARRAY(0x2) for the feature unit 0x1E.

Fixes: ca5118c0 ('ASoC: rt711-sdca: change capture switch controls')
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20210504100424.8760-1-shumingf@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>