ci: add test to build dynamically linked debugcc

In 73b135d12589("meson: add option to build debugcc as a dynamically
linked binary") we added the ability to optionally build debugcc as a
dynamically linked binary. Add a test to ensure we can build debugcc as
a dynamically linked binary.

Signed-off-by: Christopher Obbard <christopher.obbard@linaro.org>

.github/workflows/ci.yml

@@ -86,3 +86,14 @@ jobs:
           fi
           ninja -C build
           ninja -C build install
+
+      - name: Build (dynamically linked binary)
+        run: |
+          rm -rf build
+          if [ ${{ matrix.target }} = "native" ] ; then
+            meson setup . build --werror -Ddynamic-linking=true
+          else
+            meson setup --cross-file cross.txt . build --werror -Ddynamic-linking=true
+          fi
+          ninja -C build
+          ninja -C build install