Update emu.yml

.github/workflows/check-usage.sh

+#!/bin/bash
+
+echo $1
+echo $2
+grep -rn $1 $2/src/main/scala/xiangshan
+if [[ $? == 0 ]];
+then
+	exit 1
+fi
+exit 0

.github/workflows/emu.yml

@@ -16,12 +16,7 @@ jobs:
         with:
           submodules: 'recursive'
       - name: Check Wiring
-        run: |
-          grep -rn "BoringUtils" $($GITHUB_WORKSPACE/src/main/scala/xiangshan)
-          if [[ $? == 0 ]];
-          then
-              exit 1
-          fi
+        run: bash .github/workflows/check-usage.sh "BoringUtils" $GITHUB_WORKSPACE
       - name: Set env
         run: |
           echo ::set-env name=NEMU_HOME::/home/ci-runner/xsenv/NEMU