scripts: gen_app_partitions: only parse known arguments

Since compiler options are unconditionally passed to the script,
we may pass arguments that are not recognized. So we change to
only parse known arguments. Currently, it only cares about -l,
which is related to linking libraries.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

scripts/build/gen_app_partitions.py

@@ -472,7 +472,7 @@ def parse_args():
     parser.add_argument("--pinpartitions", action="store", required=False, default="",
                         help="Comma separated names of partitions to be pinned in physical memory")
 
-    args = parser.parse_args()
+    args, _ = parser.parse_known_args()
 
 
 def main():