kukui: ucm and adjustments for fennel14 audio

based on #54 (comment)
from @BenjaminWegener

systems/chromebook_kukui/extra-files/usr/share/alsa/ucm2/mt8183_da7219_r/HiFi.conf

@@ -0,0 +1,81 @@
+SectionVerb {
+	EnableSequence [
+		cdev "hw:mt8183da7219rt1"
+		cset "name='Headphone Volume' 0"
+#		cset "name='UL3_CH1 ADDA_UL_CH1' 0"
+#		cset "name='UL3_CH2 ADDA_UL_CH2' 0"
+		cset "name='I2S3_CH1 DL1_CH1' 1"
+		cset "name='I2S3_CH2 DL1_CH2' 1"
+		cset "name='MTKAIF_DMIC' 1"
+		cset "name='Mt6358 Mic Type Mux' 2"
+		cset "name='UL3_CH1 ADDA_UL_CH1' 1"
+		cset "name='UL3_CH2 ADDA_UL_CH2' 1"
+	]
+	DisableSequence [
+	]
+}
+SectionDevice."Headphone" {
+	Value {
+		PlaybackPCM "hw:mt8183da7219rt1,0"
+		JackDev "mt8183_da7219_rt1015p Headset Jack"
+		JackSwitch "2"
+	}
+
+	ConflictingDevice [
+		"Speaker"
+	]
+
+	EnableSequence [
+		cdev "hw:mt8183da7219rt1"
+		cset "name='I2S3_CH1 DL1_CH1' 1"
+		cset "name='I2S3_CH2 DL1_CH2' 1"
+	]
+	DisableSequence [
+		cdev "hw:mt8183da7219rt1"
+		cset "name='I2S3_CH1 DL1_CH1' 0"
+		cset "name='I2S3_CH2 DL1_CH2' 0"
+	]
+}
+SectionDevice."Speaker" {
+	Value {
+		PlaybackPCM "hw:mt8183da7219rt1,0"
+		DspName "speaker_eq"
+	}
+
+	ConflictingDevice [
+		"Headphone"
+	]
+
+	EnableSequence [
+		cdev "hw:mt8183da7219rt1"
+		cset "name='I2S3_CH1 DL1_CH1' 1"
+		cset "name='I2S3_CH2 DL1_CH2' 1"
+	]
+	DisableSequence [
+		cdev "hw:mt8183da7219rt1"
+		cset "name='I2S3_CH1 DL1_CH1' 0"
+		cset "name='I2S3_CH2 DL1_CH2' 0"
+	]
+}
+
+SectionDevice."Internal Mic" {
+	Value {
+		CapturePCM "hw:mt8183da7219rt1,5"
+		CaptureChannelMap "0 1 -1 -1 -1 -1 -1 -1 -1 -1 -1"
+		IntrinsicSensitivity "-600"
+	}
+	EnableSequence [
+		cdev "hw:mt8183da7219rt1"
+		cset "name='MTKAIF_DMIC' 1"
+		cset "name='Mt6358 Mic Type Mux' 2"
+		cset "name='UL3_CH1 ADDA_UL_CH1' 1"
+		cset "name='UL3_CH2 ADDA_UL_CH2' 1"
+	]
+	DisableSequence [
+		cdev "hw:mt8183da7219rt1"
+		cset "name='MTKAIF_DMIC' 0"
+		cset "name='Mt6358 Mic Type Mux' 0"
+		cset "name='UL3_CH1 ADDA_UL_CH1' 0"
+		cset "name='UL3_CH2 ADDA_UL_CH2' 0"
+	]
+}

systems/chromebook_kukui/extra-files/usr/share/alsa/ucm2/mt8183_da7219_r/mt8183_da7219_rt1015p.conf

@@ -0,0 +1,8 @@
+Syntax 2
+
+Comment "Kukui internal card"
+
+SectionUseCase."HiFi" {
+	File "HiFi.conf"
+	Comment "Default"
+}

systems/chromebook_kukui/rc-local-additions.txt

@@ -24,4 +24,17 @@ fi
 #  echo 400000000 > /sys/class/devfreq/13040000.gpu/min_freq
 #fi
 
-modprobe mt8183-mt6358-ts3a227-max98357
+grep -q 'Google fennel14 sku0 board' /proc/device-tree/model
+if [ "$?" = "0" ]; then
+  # fennel14 has a different audio setup
+  modprobe mt8183-da7219-max98357
+  alsaucm -n -b - <<EOM
+  open mt8183_da7219_r
+  reset
+  set _verb HiFi
+  set _enadev Speaker
+EOM
+else
+  # most others work with this audio setup
+  modprobe mt8183-mt6358-ts3a227-max98357
+fi