ASoC: topology: add private data to manifest

The topology file manifest should include a private data field. This
allows vendors to specify vendor data in the manifest, like
timestamps, hashes, additional information for removing platform
configuration out of drivers and making these configurable per platform

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/uapi/sound/asoc.h

@@ -238,6 +238,7 @@ struct snd_soc_tplg_manifest {
 	__le32 graph_elems;	/* number of graph elements */
 	__le32 dai_elems;	/* number of DAI elements */
 	__le32 dai_link_elems;	/* number of DAI link elements */
+	struct snd_soc_tplg_private priv;
 } __attribute__((packed));
 
 /*