drm_hwcomposer: update #include's for drm_hwcomposer.h

That's the second most important part of renaming a file.

Change-Id: If9280f3b360389ef17b798e162a9c3b0c0a3133b
diff --git a/virtualcompositorworker.h b/virtualcompositorworker.h
index 3066547..1fc5e43 100644
--- a/virtualcompositorworker.h
+++ b/virtualcompositorworker.h
@@ -17,7 +17,7 @@
 #ifndef ANDROID_VIRTUAL_COMPOSITOR_WORKER_H_
 #define ANDROID_VIRTUAL_COMPOSITOR_WORKER_H_
 
-#include "drm_hwcomposer.h"
+#include "drmhwcomposer.h"
 #include "worker.h"
 
 #include <queue>