We already have snd_pcm_direction_name(). Let's use it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87sevrk52f.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Takashi Iwai <tiwai@suse.de>