Add validate UCM workflow

.github/workflows/validate-ucm.yml

@@ -0,0 +1,14 @@
+name: Validate UCM
+
+on:
+  push:
+    branches: ["main"]
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Validate UCM config
+        run: bash validate-ucm.sh

validate-ucm.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+# Script to check each HiFi file for any keywords from the ChromeOS UCM
+# that should have been removed
+
+failed=0
+filtered_keywords=('cdev' 'FullySpecifiedUCM' 'DspName' 'sof' 'JackDev' 'JackSwitch' 'Line Out' 'CaptureChannelMap' 'IntrinsicSensitivity')
+
+for keyword in "${filtered_keywords[@]}"; do
+	find -name "HiFi*.conf" -exec grep "${keyword}" {} + && failed=1
+done
+
+if [ $failed = 1 ]; then
+	echo "UCM validation failed"
+	exit 1
+else
+	echo "UCM validation passed"
+	exit 0
+fi