fwk: Upload util to github actions

TEST=Check if util is uploaded, download and check that it can run
BRANCH=fwk-main
BUG=

Signed-off-by: Daniel Schaefer <dhs@frame.work>
(cherry picked from commit 0887e69)

Author: JohnAZoidberg

.github/workflows/zephyr-build.yml

@@ -98,3 +98,8 @@ jobs:
         with:
           name: ${{ matrix.platform.name }}.${{ env.VERSIONINFO }}
           path: /${{ matrix.platform.folder }}/ec_home/chromiumos/src/platform/ec/build/zephyr/${{ matrix.platform.name }}/output
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: util_${{ matrix.platform.name }}.${{ env.VERSIONINFO }}
+          path: /${{ matrix.platform.folder }}/ec_home/chromiumos/src/platform/ec/build/host/util