ASoC: Intel: skl_hda_dsp_generic: Update Kconfig documentation

The Kconfig documentation for SND_SOC_INTEL_SKL_HDA_DSP_GENERIC_MACH
is a bit misleading as it refers to a set of older platforms,
while in practise this machine driver supports all modern
Intel systems with Smart Sound Technology based DSP and HDA codecs.

Modify the Kconfig text to reflect current state.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210621194057.21711-11-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/Kconfig

@@ -442,7 +442,7 @@ endif ## SND_SOC_SOF_GEMINILAKE
 if SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC || SND_SOC_SOF_HDA_AUDIO_CODEC
 
 config SND_SOC_INTEL_SKL_HDA_DSP_GENERIC_MACH
-	tristate "SKL/KBL/BXT/APL with HDA Codecs"
+	tristate "Skylake+ with HDA Codecs"
 	depends on SND_HDA_CODEC_HDMI
 	depends on GPIOLIB
 	select SND_SOC_HDAC_HDMI
@@ -450,8 +450,9 @@ config SND_SOC_INTEL_SKL_HDA_DSP_GENERIC_MACH
 	select SND_SOC_DMIC
 	# SND_SOC_HDAC_HDA is already selected
 	help
-	  This adds support for ASoC machine driver for Intel platforms
-	  SKL/KBL/BXT/APL with iDisp, HDA audio codecs.
+	  This adds support for ASoC machine driver for Intel Skylake+
+	  platforms with display (HDMI/DP) and HDA audio codecs, and
+	  Smart Sound Technology (SST) integrated audio DSP.
 	  Say Y or m if you have such a device. This is a recommended option.
 	  If unsure select "N".