ASoC: Intel: Add debug output when boot fails.

Add the debug output from IPCD and IPCX when booting fails.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/intel/sst-haswell-ipc.c b/sound/soc/intel/sst-haswell-ipc.c
index b37d3ee..0ea7c3d 100644
--- a/sound/soc/intel/sst-haswell-ipc.c
+++ b/sound/soc/intel/sst-haswell-ipc.c
@@ -1927,7 +1927,9 @@
 	ret = wait_event_timeout(hsw->boot_wait, hsw->boot_complete,
 		msecs_to_jiffies(IPC_BOOT_MSECS));
 	if (ret == 0) {
-		dev_err(hsw->dev, "error: audio DSP boot timeout\n");
+		dev_err(hsw->dev, "error: audio DSP boot timeout IPCD 0x%x IPCX 0x%x\n",
+			sst_dsp_shim_read_unlocked(hsw->dsp, SST_IPCD),
+			sst_dsp_shim_read_unlocked(hsw->dsp, SST_IPCX));
 		return -EIO;
 	}
 
@@ -2038,7 +2040,9 @@
 		msecs_to_jiffies(IPC_BOOT_MSECS));
 	if (ret == 0) {
 		ret = -EIO;
-		dev_err(hsw->dev, "error: ADSP boot timeout\n");
+		dev_err(hsw->dev, "error: audio DSP boot timeout IPCD 0x%x IPCX 0x%x\n",
+			sst_dsp_shim_read_unlocked(hsw->dsp, SST_IPCD),
+			sst_dsp_shim_read_unlocked(hsw->dsp, SST_IPCX));
 		goto boot_err;
 	}