Add unit test for common ble

Test: unit test
Bug: 16851373
Change-Id: I429e8f4b29cd0a25aa87a37586e980d8aac1a0ec
diff --git a/nearby/tests/unit/Android.bp b/nearby/tests/unit/Android.bp
index 9b5b14c..55ec645 100644
--- a/nearby/tests/unit/Android.bp
+++ b/nearby/tests/unit/Android.bp
@@ -43,6 +43,7 @@
         "platform-test-annotations",
         "service-nearby",
         "truth-prebuilt",
+        "Robolectric_all-target",
     ],
     test_suites: [
         "general-tests",