ASoC: meson: axg-pdm: Fix double word in comments

Delete the doubled word "for" in comments.

Signed-off-by: Shaomin Deng <dengshaomin@cdjrlc.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20221017141812.6867-1-dengshaomin@cdjrlc.com


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