ASoC: meson: aiu: Fix spelling mistake "Unsupport" -> "Unsupported"

There is a spelling mistake in a dev_err error message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20210924231242.144692-1-colin.king@canonical.com


Signed-off-by: Mark Brown <broonie@kernel.org>