ASoC: SOF: Intel: ICL: add Icelake SSP count

On Icelake we have 6 SSP ports, add ICL SSP count to
enable all SSPs, instead of using the SSP count defined
for CNL.
Signed-off-by: Zhu Yingjiang <yingjiang.zhu@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/intel/hda.h

@@ -348,6 +348,7 @@
 /* SSP Count of the Platform */
 #define APL_SSP_COUNT		6
 #define CNL_SSP_COUNT		3
+#define ICL_SSP_COUNT		6
 
 /* SSP Registers */
 #define SSP_SSC1_OFFSET		0x4