topology2: Add HW Config class

Add class definition for HW Config, HW Config object
can be instantiated as:

  Object.Base.hw_config."NAME" {
	id		0
	mclk_freq	24000000
	bclk_freq	4800000
	tdm_slot_width	25
    }

where NAME is the unique instance name for the hw_config
object within the same alsaconf node, for example, SSP0.

Signed-off-by: Ranjani Sridharan <ranjani.sidharan@linux.intel.com>
Signed-off-by: Chao Song <chao.song@linux.intel.com>

tools/topology/topology2/include/dais/hw_config.conf

@@ -0,0 +1,83 @@
+# Hardware config class definition DAIs. All attributes defined herein
+# are namespaced by alsatplg to "Object.Base.hw_config.NAME.attribute_name"
+#
+# Object.Base.hw_config."NAME" {
+# 		id		0
+# 		mclk_freq	24000000
+# 		bclk_freq	4800000
+# 		tdm_slot_width	25
+# 	}
+#
+# where NAME is the unique instance name for the hw_config object
+# within the same alsaconf node.
+
+Class.Base."hw_config" {
+	#
+	# Argument used to construct hw config (hw config ID)
+	#
+	DefineAttribute."id" {}
+
+	DefineAttribute."name" {
+		type	"string"
+	}
+
+	# All attributes are only used for SSP.
+	DefineAttribute."format" {
+		type	"string"
+		constraints {
+			valid_values [
+				"I2S"
+				"DSP_A"
+				"DSP_B"
+			]
+		}
+	}
+
+	DefineAttribute."mclk" {
+		type	"string"
+	}
+
+	DefineAttribute."mclk_freq" {}
+
+	DefineAttribute."bclk" {
+		type	"string"
+	}
+
+	DefineAttribute."bclk_freq" {}
+
+	DefineAttribute."fsync" {
+		type	"string"
+	}
+
+	DefineAttribute."fsync_freq" {}
+
+	DefineAttribute."tdm_slots" {}
+
+	DefineAttribute."tdm_slot_width" {}
+
+	DefineAttribute."tx_slots" {}
+
+	DefineAttribute."rx_slots" {}
+
+	attributes {
+		constructor [
+			"id"
+		]
+		#
+		# hw_cfg objects instantiated within the same alsaconf node must have unique
+		# 'name' attribute
+		#
+		unique	"name"
+	}
+
+	#TODO: Add link flags
+
+	format		"I2S"
+	mclk		"codec_mclk_in"
+	bclk		"codec_consumer"
+	fsync		"codec_consumer"
+	fsync_freq	48000
+	tdm_slots	2
+	tx_slots	3
+	rx_slots	3
+}