camera: set mNeedConfig after creating ZSL stream

Set mNeedConfig after creating ZSL stream, camera device
will reconfigure for the case when only ZSL stream
is changed.

Change-Id: Ib592817f81125969824a1280349f77973116f375
diff --git a/services/camera/libcameraservice/device3/Camera3Device.cpp b/services/camera/libcameraservice/device3/Camera3Device.cpp
index 7e11a3b..1d4768c 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Device.cpp
@@ -654,6 +654,8 @@
     }
     mInputStream = newStream;
 
+    mNeedConfig = true;
+
     *id = mNextStreamId++;
     *zslStream = newStream;