CI: use zephyr's checkpatch.pl

Use the checkpatch.pl included with Zephyr to perform the check.

Signed-off-by: TOKITA Hiroshi <[email protected]>

Author: soburi

.github/workflows/checkpatch.yml

@@ -27,4 +27,6 @@ jobs:
         fetch-depth: ${{ env.PR_FETCH_DEPTH }}
     - name: Run checkpatch review
       uses: webispy/checkpatch-action@v9
+      env:
+        CHECKPATCH_COMMAND:  perl ./zephyr/scripts/checkpatch.pl