drm_hwcomposer: Use correct DRM event context version
am: 2d1bc46486

Change-Id: I800ac862d16cbe7b74e877a887ab6eaf58c16440
diff --git a/drmeventlistener.cpp b/drmeventlistener.cpp
index ca9d7fc..2607eef 100644
--- a/drmeventlistener.cpp
+++ b/drmeventlistener.cpp
@@ -126,7 +126,7 @@
 
   if (FD_ISSET(drm_->fd(), &fds_)) {
     drmEventContext event_context = {
-        .version = DRM_EVENT_CONTEXT_VERSION,
+        .version = 2,
         .vblank_handler = NULL,
         .page_flip_handler = DrmEventListener::FlipHandler};
     drmHandleEvent(drm_->fd(), &event_context);