ASoC: Intel: atom: save FW version

After the boot of the SST FW the firmware version is send back
to the driver. This patch is saving the FW version inside the
driver.

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

sound/soc/intel/atom/sst/sst.h

@@ -436,6 +436,7 @@ struct intel_sst_drv {
 	 */
 	char firmware_name[FW_NAME_SIZE];
 
+	struct snd_sst_fw_version fw_version;
 	struct sst_fw_save	*fw_save;
 };