Enable RDA targets

SenRamakri · 0xc0170 · commit 22bacdca0c40 · 2019-02-22T10:40:16.000Z
diff --git a/targets/targets.json b/targets/targets.json
@@ -8150,7 +8150,7 @@
             "FLASH",
             "TRNG"
         ],
-        "release_versions": []
+        "release_versions": ["2", "5"]
     },
     "UNO_91H": {
         "inherits": ["RDA5981X"],
