Build: Clone QCBOR to workspace and use local path

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: I8c40ad8e2881af5ef57683ee3528c96bcffbebb6
diff --git a/build_helper/build_helper_configs.py b/build_helper/build_helper_configs.py
index 1a07825..9b611ee 100755
--- a/build_helper/build_helper_configs.py
+++ b/build_helper/build_helper_configs.py
@@ -60,6 +60,7 @@
         "-DMBEDCRYPTO_PATH=%(codebase_root_dir)s/../mbedtls " + \
         "-DPSA_ARCH_TESTS_PATH=%(codebase_root_dir)s/../psa-arch-tests " + \
         "-DMCUBOOT_PATH=%(codebase_root_dir)s/../mcuboot " + \
+        "-DQCBOR_PATH=%(codebase_root_dir)s/../QCBOR " + \
         "%(codebase_root_dir)s",
 
     "set_compiler_path": "export PATH=$PATH:$%(compiler)s_PATH",