Build: Update MMIO build param

The build param to enable MMIO is changed to PSA_FRAMEWORK_HAS_MM_IOVEC.

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: Ia7812913b57fec498dd2b2f6451de2551f9b48d0
diff --git a/build_helper/build_helper_configs.py b/build_helper/build_helper_configs.py
index ae0925a..22b7288 100755
--- a/build_helper/build_helper_configs.py
+++ b/build_helper/build_helper_configs.py
@@ -65,7 +65,7 @@
         "-DTFM_PROFILE=%(profile)s " + \
         "-DTFM_PARTITION_PROTECTED_STORAGE=%(partition_ps)s " + \
         "-DTFM_NS_MANAGE_NSID=%(nsce)s " + \
-        "-DCONFIG_TFM_ENABLE_MM_IOVEC=%(mmio)s " + \
+        "-DPSA_FRAMEWORK_HAS_MM_IOVEC=%(mmio)s " + \
         "%(codebase_root_dir)s",
 
     # A small subset of  string substitution params is allowed in commands.