tf-m-nightly: Add BUILD_JOBS param

To be able to set -j param (job parallelism) as passed to CMake, etc., do
be able to debug suspected issues.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: Id5ddd80b17cf14d09459403f37409a66d9f83f7b
diff --git a/tf-m-nightly.yaml b/tf-m-nightly.yaml
index 729a8b8..16feab0 100644
--- a/tf-m-nightly.yaml
+++ b/tf-m-nightly.yaml
@@ -158,6 +158,11 @@
           default: 1
           description: |
             Whether to submit FVP tests via TuxSuite (instead of LAVA)
+      - string:
+          name: 'BUILD_JOBS'
+          default: '2'
+          description: |
+            --jobs to pass to make, etc.
     wrappers:
         - timestamps
     pipeline-scm: