ALSA: ASoC: DaVinci: davinci-i2s add comments to explain polarity
ALSA: ASoC: DaVinci: davinci-i2s add comments to explain polarity

Document the current polarity choices.

Signed-off-by: Troy Kisky <debfc29e3a9e989b865b88f1f207951588bac6b3@boundarydevices.com>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@opensource.wolfsonmicro.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs