Merge pull request #13999 from addyi:fixAndroidLintingErrors

* fix android lint error in BaseLoaderCallback (LongLogTag)

Lint Error that was causde by the to long TAG:
BaseLoaderCallback.java:31:
Error: The logging tag can be at most 23 characters,
was 31 (OpenCVLoader/BaseLoaderCallback) [LongLogTag]
Log.e(TAG, "Package installation failed!");

* add requested "OCV" prefix for android logging

modules/java/generator/android/java/org/opencv/android/BaseLoaderCallback.java

@@ -137,5 +137,5 @@ public abstract class BaseLoaderCallback implements LoaderCallbackInterface {
     }
 
     protected Context mAppContext;
-    private final static String TAG = "OpenCVLoader/BaseLoaderCallback";
+    private final static String TAG = "OCV/BaseLoaderCallback";
 }