travis.yml: Test the s390-ccw build, too

Since we can now use a s390x host on Travis, we can also build and
test the s390-ccw bios images there. For this we have to make sure
that roms/SLOF is checked out, too, and then move the generated *.img
files to the right location before running the tests.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200206202543.7085-1-thuth@redhat.com>
Message-Id: <20200225124710.14152-6-alex.bennee@linaro.org>

.travis.yml

@@ -509,6 +509,16 @@ matrix:
       env:
         - TEST_CMD="make check check-tcg V=1"
         - CONFIG="--disable-containers --target-list=${MAIN_SOFTMMU_TARGETS},s390x-linux-user"
+      script:
+        - ( cd ${SRC_DIR} ; git submodule update --init roms/SLOF )
+        - BUILD_RC=0 && make -j${JOBS} || BUILD_RC=$?
+        - |
+          if [ "$BUILD_RC" -eq 0 ] ; then
+              mv pc-bios/s390-ccw/*.img pc-bios/ ;
+              ${TEST_CMD} ;
+          else
+              $(exit $BUILD_RC);
+          fi
 
     # Release builds
     # The make-release script expect a QEMU version, so our tag must start with a 'v'.