ASoC: renesas: fsi: Move fsi_stream_is_working()

ASoC: renesas: fsi: Move fsi_stream_is_working()

Move fsi_stream_is_working() before fsi_count_fifo_err().
This prepares for a subsequent patch that needs to check stream status
when handling in-flight IRQ handlers. No functional changwqes intended.

Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Suggested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260609113836.45079-5-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>