Add missing functor for DVR API

Missing initialization of functor.

Bug: 36050795
Test: Ran app using the DVR API and verified API is loaded correctly.
Change-Id: Ia2f7a6cb69e0be724ea0c67ce2d467f8605ec29b
diff --git a/libs/vr/libdvr/dvr_api.cpp b/libs/vr/libdvr/dvr_api.cpp
index f786c29..49702fd 100644
--- a/libs/vr/libdvr/dvr_api.cpp
+++ b/libs/vr/libdvr/dvr_api.cpp
@@ -108,6 +108,7 @@
     dvr_api->hwc_frame_get_display_id = dvrHwcFrameGetDisplayId;
     dvr_api->hwc_frame_get_display_width = dvrHwcFrameGetDisplayWidth;
     dvr_api->hwc_frame_get_display_height = dvrHwcFrameGetDisplayHeight;
+    dvr_api->hwc_frame_get_display_removed = dvrHwcFrameGetDisplayRemoved;
     dvr_api->hwc_frame_get_layer_count = dvrHwcFrameGetLayerCount;
     dvr_api->hwc_frame_get_layer_id = dvrHwcFrameGetLayerId;
     dvr_api->hwc_frame_get_layer_buffer = dvrHwcFrameGetLayerBuffer;