ASoC: rt5677: fix legacy dai naming

Starting with 6.0-rc1 the CPU DAI is not registered and the sound
card is unavailable. Adding legacy_dai_naming causes it to function
properly again.

Fixes: fc34ece4

 ("ASoC: Refactor non_legacy_dai_naming flag")
Signed-off-by: Jason Montleon <jmontleo@redhat.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20221103144612.4431-2-jmontleo@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>