automation: linux: pmqtest: fix indentation

Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
diff --git a/automated/linux/pmqtest/pmqtest.sh b/automated/linux/pmqtest/pmqtest.sh
index 57ecfba..d06bbb9 100755
--- a/automated/linux/pmqtest/pmqtest.sh
+++ b/automated/linux/pmqtest/pmqtest.sh
@@ -19,7 +19,7 @@
 while getopts ":D:w:" opt; do
     case "${opt}" in
         D) DURATION="${OPTARG}" ;;
-	w) BACKGROUND_CMD="${OPTARG}" ;;
+        w) BACKGROUND_CMD="${OPTARG}" ;;
         *) usage ;;
     esac
 done