Import Mbed OS hard-float snapshot

tools/test/config/simple_features/mbed_app.json

@@ -0,0 +1,7 @@
+{
+    "target_overrides": {
+        "*": {
+            "target.features": ["BOOTLOADER"]
+        }
+    }
+}

tools/test/config/simple_features/targets.json

@@ -0,0 +1,14 @@
+{
+    "test_target": {
+        "supported_toolchains": ["GCC_ARM"],
+        "core": "Cortex-M0",
+        "extra_labels": [],
+        "features": [],
+        "c_lib": "std",
+        "supported_c_libs": {
+                "arm": ["std"],
+                "gcc_arm": ["std", "small"],
+                "iar": ["std"]
+        }
+    }
+}

tools/test/config/simple_features/test_data.json

@@ -0,0 +1,5 @@
+{
+    "test_target": {
+        "expected_features": ["BOOTLOADER"]
+    }
+}