[PATCH v2] ASoC: soc-dapm.h: fixup warning struct snd_pcm_substream not declared

[Lucas Tanure <lucas.tanure@xxxxxxxxxxxxx>]

Add struct snd_pcm_substream forward declaration

Fixes: 078a85f2806f ("ASoC: dapm: Only power up active channels from a DAI")
Signed-off-by: Lucas Tanure <lucas.tanure@xxxxxxxxxxxxx>
---
Changes since v1:
- Use forward declaration instead of header sound/pcm.h
---
 include/sound/soc-dapm.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 77495e5988c1..64915ebd641e 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -16,6 +16,7 @@
 #include <sound/asoc.h>
 
 struct device;
+struct snd_pcm_substream;
 struct snd_soc_pcm_runtime;
 struct soc_enum;
 
-- 
2.39.1