github-actions: Add support for skipping kselftest/ltp

Signed-off-by: Shreeya Patel <spatel@ciq.com>

Author: shreeya-patel98

.github/workflows/kernel-build-and-test-multiarch-trigger.yml

@@ -69,6 +69,20 @@ jobs:
             echo "SKIP_CI=false" >> "$GITHUB_ENV"
           fi
 
+          # Check for [skip kselftests] in commit message or PR title
+          if echo "$COMMIT_MSG" | grep -qiE '\[skip kselftests\]' || \
+             echo "$PR_TITLE"   | grep -qiE '\[skip kselftests\]'; then
+            echo "⏭️ [skip kselftests] detected — skipping kselftests"
+            SKIP_KSELFTESTS=true
+          fi
+
+          # Check for [skip ltp] in commit message or PR title
+          if echo "$COMMIT_MSG" | grep -qiE '\[skip ltp\]' || \
+             echo "$PR_TITLE"   | grep -qiE '\[skip ltp\]'; then
+            echo "⏭️ [skip ltp] detected — skipping LTP"
+            SKIP_LTP=true
+          fi
+
           # On push events there is no PR context; BASE_REF is empty string
           # It will be deduced automatically in a later worklow
           if [[ "$IS_PR" == "false" ]]; then