ssp.c: fix recent arg count regression in dai_info()

Fixes "too many arguments for format [-Wformat-extra-args]" in recent
commit 287a5f9 ("ssp: mclk/bclk turned off unexpectedly")

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
Signed-off-by: Brent Lu <brent.lu@intel.com>

Author: marc-hb

src/drivers/intel/ssp/ssp.c

@@ -758,7 +758,7 @@ static int ssp_set_config(struct dai *dai,
 		/* disable SSP port if no users */
 		if (ssp->state[SOF_IPC_STREAM_CAPTURE] != COMP_STATE_PREPARE ||
 		    ssp->state[SOF_IPC_STREAM_PLAYBACK] != COMP_STATE_PREPARE) {
-			dai_info(dai, "ssp_set_config(): hw_free stage: ignore since there is still user",
+			dai_info(dai, "ssp_set_config(): hw_free stage: ignore since SSP%d still in use",
 				 dai->index);
 			break;
 		}