Targets: Add default "supported_form_factors" for all targets

hugueskamba · hugueskamba · commit 1e5cdafab433 · 2020-08-27T15:17:37.000+01:00
This helps mbed-tools to build targets that do not set that
attribute themselves.
diff --git a/targets/targets.json b/targets/targets.json
@@ -5,6 +5,7 @@
         "default_toolchain": "ARM",
         "supported_toolchains": null,
         "extra_labels": [],
+        "supported_form_factors": [],
         "components": [],
         "is_disk_virtual": false,
         "macros": [],
