ci/grep: fail if device pkg uses console=null (MR 5752)

.ci/grep.sh

@@ -4,6 +4,8 @@
 
 exit_code=0
 
+set -x
+
 if [ "$(id -u)" = 0 ]; then
 	set -x
 	apk -q add grep
@@ -87,4 +89,11 @@ if grep -qEr 'PMOS_NO_OUTPUT_REDIRECT' -- *; then
 	exit_code=1
 fi
 
+if grep -qEr '^deviceinfo_kernel_cmdline.*[\"\s]console=null' -- *; then
+	echo "ERROR: Do not use console=null in the kernel command line."
+	echo "Use these params to quiet console on boot: quiet loglevel=2 udev.log_level=2"
+	echo "For more information, see: pma#2989"
+	exit_code=1
+fi
+
 exit "$exit_code"