topology2: dmic-generic.conf: Rename generic DMIC volume

Rename generic DMIC mixer name. Define the associated PCM name in a
common place and refer to that name on the mixer name.

On cavs-tgl-nocodec.tplg is seen a following mixer name change:

'gain.13.1 DMIC0 Capture Volume 1' > 'gain.13.1 DMIC Capture Volume'

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

Author: Jyri Sarha

tools/topology/topology2/platform/intel/dmic-generic.conf

@@ -1,3 +1,7 @@
+Define {
+       DMIC0_PCM_NAME	"DMIC"
+}
+
 Object.Dai.DMIC [
 	{
 		dai_index 0
@@ -121,7 +125,7 @@ IncludeByKey.PASSTHROUGH {
 						out_ch_map	$CHANNEL_MAP_3_POINT_1
 					}
 					Object.Control.mixer.1 {
-						name 'DMIC0 Capture Volume 1'
+						name '$DMIC0_PCM_NAME Capture Volume'
 					}
 				}
 
@@ -345,11 +349,11 @@ IncludeByKey.PASSTHROUGH {
 
 Object.PCM.pcm [
 	{
-		name	"DMIC"
+		name	"$DMIC0_PCM_NAME"
 		id $DMIC0_PCM_ID
 		direction	"capture"
 		Object.Base.fe_dai.1 {
-			name "DMIC"
+			name "$DMIC0_PCM_NAME"
 		}
 
 		Object.PCM.pcm_caps.1 {