ucm2: Improve devkit config

Use the mux to switch mics and properly configure defaults and
detect headphone jack.

default/audio/ucm2/Librem_5_Devkit/HiFi.conf

@@ -2,9 +2,18 @@ SectionVerb {
 	EnableSequence [
 	        cset "name='Digital Input Mux' I2S"
 	        cset "name='PCM Playback Volume' 144"
+
+		cset "name='AVC Switch' off"
+		cset "name='Headphone Playback ZC Switch' off"
+
+		cset "name='Capture Attenuate Switch (-6dB)' off"
+		cset "name='Capture Mux' MIX_IN"
+		cset "name='Capture ZC Switch' off"
+		cset "name='Capture Switch' On"
+		cset "name='Capture Volume' 15,15"
 	]
 	DisableSequence [
-                cset "name='Digital Playback Volume' 0"
+                cset "name='PCM Playback Volume' 0"
 	]
 	Value {
 	}
@@ -18,6 +27,7 @@ SectionDevice."Handset".0 {
 	]
 
 	EnableSequence [
+		cset "name='Mic Mux MUX' Input 2"
 		cset "name='Lineout Playback Switch' on"
 		cset "name='Lineout Playback Volume' 18"
 		cset "name='Mic Volume' 2"
@@ -44,6 +54,7 @@ SectionDevice."Headset".0 {
 	]
 
 	EnableSequence [
+		cset "name='Mic Mux MUX' Input 1"
 		cset "name='Headphone Mux' DAC"
 		cset "name='Headphone Playback Volume' 63"
 		cset "name='Headphone Playback Switch' on"
@@ -58,5 +69,6 @@ SectionDevice."Headset".0 {
                 PlaybackSwitch "name='Headphone Playback Switch'"
 		CapturePriority "700"
 		CapturePCM "hw:${CardId},0"
+		JackControl "Headphones Jack"
 	}
 }