ASoC: cs35l41: Fix max number of TX channels

ASoC: cs35l41: Fix max number of TX channels

[ Upstream commit 16639d39bdf577168d3fe34315917a94365c8d19 ]

This device only has 4 TX channels.

Fixes: fe1024d50477b ("ASoC: cs35l41: Combine adjacent register writes")
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220303173059.269657-3-tanureal@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>