ASoC: Move DAPM paths from DAPM context to snd_soc_card

Decoupling DAPM paths from DAPM context is a first prerequisite when
extending ASoC core to cross-device paths. This patch is almost a nullop and
does not allow to construct cross-device setup but the path clean-up part in
dapm_free_widgets is prepared to remove cross-device paths between a device
being removed and others.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 7e65b01..466895b 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -661,6 +661,8 @@
 	struct list_head platform_dev_list;
 	struct list_head dai_dev_list;
 
+	struct list_head paths;
+
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *debugfs_card_root;
 	struct dentry *debugfs_pop_time;