Merge pull request #8724 from volzhs/android-jni

Fix compile error when use "android_add_jni_dir"

platform/android/build.gradle.template

@@ -68,6 +68,7 @@ android {
 				$$GRADLE_ASSET_DIRS$$
 			]
 			jniLibs.srcDirs = [
+				'libs'
 				$$GRADLE_JNI_DIRS$$
 			]
 		}