Docker: Update TF-A to use TF-A docker image

Signed-off-by: Benjamin Copeland <ben.copeland@linaro.org>
Change-Id: Iff5ad29726a9e840477ca96f43b2f81aa392654f
diff --git a/tf-a-static-cppcheck.yaml b/tf-a-static-cppcheck.yaml
index c60576d..98461c3 100644
--- a/tf-a-static-cppcheck.yaml
+++ b/tf-a-static-cppcheck.yaml
@@ -5,7 +5,7 @@
     gerrit-refspec: 'refs/heads/master'
     days-to-keep: '180'
     num-to-keep: '180'
-    exec-node: 'docker-amd64-bionic'
+    exec-node: 'docker-amd64-tf-a-bionic'
 
 - scm:
     name: tf-a-ci-scripts