Camera3: Make ITS test_format_combos test pass 100%

When support stream is used, during configure_streams,
support stream needs to be stopped and restarted. Add
this change to make sure that test_format_combos passes
for all 40/40 test cases.

Bug: 15989117
Change-Id: Ic483106a7fac931ba9d6e664130d59884ac69c3e
diff --git a/camera/QCamera2/HAL3/QCamera3HWI.cpp b/camera/QCamera2/HAL3/QCamera3HWI.cpp
index dfeddb1..1b4e6b2 100644
--- a/camera/QCamera2/HAL3/QCamera3HWI.cpp
+++ b/camera/QCamera2/HAL3/QCamera3HWI.cpp
@@ -524,6 +524,8 @@
         channel->stop();
         (*it)->status = INVALID;
     }
+    if (mSupportChannel)
+        mSupportChannel->stop();
     if (mMetadataChannel) {
         /* If content of mStreamInfo is not 0, there is metadata stream */
         mMetadataChannel->stop();
@@ -596,6 +598,10 @@
         delete mMetadataChannel;
         mMetadataChannel = NULL;
     }
+    if (mSupportChannel) {
+        delete mSupportChannel;
+        mSupportChannel = NULL;
+    }
 
     //Create metadata channel and initialize it
     mMetadataChannel = new QCamera3MetadataChannel(mCameraHandle->camera_handle,