drm: xlnx: zynqmp_dpsub: use snd_soc_dummy_dlc

struct zynqmp_dp_audio :: components has codec component, but it is
used as dummy DAI. OTOH, We can use common snd_soc_dummy_dlc.
Let's use common dummy_dlc instead of own component.

Signed-off-by: Kuninori Morimoto <[e-mail]>
Tested-by: Tomi Valkeinen <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Tomi Valkeinen <[e-mail]>

drivers/gpu/drm/xlnx/zynqmp_dp_audio.c

···
 
 	struct {
 		struct snd_soc_dai_link_component cpu;
-		struct snd_soc_dai_link_component codec;
 		struct snd_soc_dai_link_component platform;
 	} components[ZYNQMP_NUM_PCMS];
 
···
 		link->num_cpus = 1;
 		link->cpus[0].dai_name = audio->dai_name;
 
-		link->codecs = &audio->components[i].codec;
+		link->codecs = &snd_soc_dummy_dlc;
 		link->num_codecs = 1;
-		link->codecs[0].name = "snd-soc-dummy";
-		link->codecs[0].dai_name = "snd-soc-dummy-dai";
 
 		link->platforms = &audio->components[i].platform;
 		link->num_platforms = 1;