ASoC: atmel-i2s: Set symmetric sample bits

ASoC: atmel-i2s: Set symmetric sample bits

[ Upstream commit 489a830a25e1730aebf7ff53430c170db9a1771b ]

The I2S needs to have the same sample bits for both capture and playback
streams.

Fixes: b543e467d1a9 ("ASoC: atmel-i2s: add driver for the new Atmel I2S controller")
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20210618150741.401739-1-codrin.ciubotariu@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>