github actions: Trigger kernelCI on pull request as well

Since we now have a separate trigger for it, this has been renamed to match
that.

For the case where a PR was automatically created and there is been an update
on the branch, both push and pr_request events are triggered. Only one
is needed, therefore the second is automatically cancelled.

Signed-off-by: Roxana Nicolescu <rnicolescu@ciq.com>

Author: roxanan1996

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

@@ -0,0 +1,19 @@
+name: Automated kernel build and test x86_64 and aarch64
+
+on:
+  push:
+    branches:
+      - '*_ciqlts9_6'
+  pull_request:
+    branches:
+      - '**'
+      - '!mainline'
+
+concurrency:
+  group: kernel-ci-${{ github.event.pull_request.head.ref || github.ref_name }}
+  cancel-in-progress: true
+
+jobs:
+  kernelCI:
+    uses: ctrliq/kernel-src-tree/.github/workflows/kernel-build-and-test-multiarch-trigger.yml@main
+    secrets: inherit