ASoC: sprd: Fix spelling mistake "faied" -> "failed"

There are two identical spelling mistakes in dev_err messages. Fix them.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>