Add ucm with loudness control for hp dock

BUG=b:241135463
TEST=Loudness control now toggled unmuted correctly on DUT
TEST=Dock headphone on DUT now works after USB card selected

Cq-Depend: chromium:5535518
Change-Id: I7f3e659583e074a76dd85d55b8b78b2abdd086da
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/adhd/+/5431273
Commit-Queue: ChromeOS Auto Retry <[email protected]>
Reviewed-by: Curtis Malainey <[email protected]>
Tested-by: [email protected] <[email protected]>
Tested-by: Steve Kendall <[email protected]>

Author: kendase3

ucm-config/for_all_boards/HP Engage Go Dock/HP Engage Go Dock.conf

@@ -0,0 +1,5 @@
+Comment "For Cros Flex USB Audio"
+SectionUseCase."HiFi" {
+	File "HiFi.conf"
+	Comment "Default"
+}

ucm-config/for_all_boards/HP Engage Go Dock/HiFi.conf

@@ -0,0 +1,18 @@
+SectionVerb {
+	Value.FullySpecifiedUCM "1"
+	EnableSequence [
+		cset "name='Loudness' on"
+	]
+
+	DisableSequence [
+	]
+}
+
+SectionDevice."Headphone" {
+	Comment "Headphones"
+
+	Value {
+		PlaybackPCM "hw:Dock,0"
+		PlaybackMixerElem "Headphone,0"
+	}
+}