tf-a-builder: allow workspace access

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Change-Id: Ibdac67f2c67e70d5dce9d0a3e97786632dfe0bac
diff --git a/tf-a-builder.yaml b/tf-a-builder.yaml
index 1fd87ed..2abe389 100644
--- a/tf-a-builder.yaml
+++ b/tf-a-builder.yaml
@@ -47,8 +47,10 @@
             num-to-keep: 180
         - authorization:
             anonymous:
+              - job-discover
               - job-read
               - job-extended-read
+              - job-workspace
     parameters:
         - string:
             name: import_cc