ASoC: Intel: baytrail: Fix register access

Baytrail has 64 bit registers, so we should use *read64* to read from it
and then use proper mask values to check status.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Tested-by: Brent Lu <brent.lu@intel.com>
Acked-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20200507133405.32251-1-amadeuszx.slawinski@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/baytrail/sst-baytrail-ipc.c

@@ -666,8 +666,8 @@ static bool byt_is_dsp_busy(struct sst_dsp *dsp)
 {
 	u64 ipcx;
 
-	ipcx = sst_dsp_shim_read_unlocked(dsp, SST_IPCX);
-	return (ipcx & (SST_IPCX_BUSY | SST_IPCX_DONE));
+	ipcx = sst_dsp_shim_read64_unlocked(dsp, SST_IPCX);
+	return (ipcx & (SST_BYT_IPCX_BUSY | SST_BYT_IPCX_DONE));
 }
 
 int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata)