Add to example

Author: spoorcc

example/dfetch.yaml

@@ -42,3 +42,15 @@ manifest:
     dst: Tests/cpputest-git-rev-only
     revision: d14505cc9191fcf17ccbd92af1c3409eb3969890
     repo-path: cpputest/cpputest.git                              # Use external git directly
+
+  - name: TF-PSA-Crypto
+    url: https://github.com/Mbed-TLS/TF-PSA-Crypto.git
+    tag: v1.0.0
+    dst: ext/TF-PSA-Crypto
+    ignore:
+     - tests
+     - scripts
+     - programs
+     - drivers
+     - doxygen
+     - docs