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
1 file changed