ASoC: dapm: Rename dapm mutex subclass to better match usage

Rename SND_SOC_DAPM_CLASS_PCM to SND_SOC_DAPM_CLASS_RUNTIME to
better match the usage and align with card mutex too.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 6c64dbe..6430238 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -433,8 +433,8 @@
 };
 
 enum snd_soc_dapm_subclass {
-	SND_SOC_DAPM_CLASS_INIT	= 0,
-	SND_SOC_DAPM_CLASS_PCM	= 1,
+	SND_SOC_DAPM_CLASS_INIT		= 0,
+	SND_SOC_DAPM_CLASS_RUNTIME	= 1,
 };
 
 /*