[NXP][rw61x] Updating workflow to add --recursive submodule update option

Signed-off-by: Gatien Chapon <gatien.chapon@nxp.com>

Author: chapongatien

.github/workflows/examples-rw61x.yaml

@@ -49,6 +49,7 @@ jobs:
               uses: ./.github/actions/checkout-submodules-and-bootstrap
               with:
                 platform: nxp
+                extra-submodule-parameters: --recursive
 
             - name: Set up environment for size reports
               uses: ./.github/actions/setup-size-reports