Add missing check box for RUN_FREEBSD

https://mbedtls.trustedfirmware.org/job/mbedtls-restricted-release-new/build has check boxes for all.sh, code-coverage and Windows but not FreeBSD. The other relevant jobs have all four.

Change-Id: Ia472257f6c22ba4007c21edf54850d3643fb0324
diff --git a/mbedtls-restricted-release-new.yaml b/mbedtls-restricted-release-new.yaml
index ae5db63..9275378 100644
--- a/mbedtls-restricted-release-new.yaml
+++ b/mbedtls-restricted-release-new.yaml
@@ -23,6 +23,10 @@
         description: Run all.sh on Linux
         name: RUN_ALL_SH
     - bool:
+        default: true
+        description: Run a selection of all.sh on FreeBSD
+        name: RUN_FREEBSD
+    - bool:
         default: false
         description: Run Windows tests
         name: RUN_WINDOWS_TEST