Pass the correct renderer to EGLImageFactory

We should be using the EGL renderer's colorspace and color range
rather than the backend renderer's for fallbacks. The former is
what actually gets passed to the host PC during stream init.

app/streaming/video/ffmpeg-renderers/eglimagefactory.h

@@ -41,8 +41,8 @@ class EglImageFactory
     };
 
 public:
-    EglImageFactory(IFFmpegRenderer* renderer);
-    bool initializeEGL(EGLDisplay, const EGLExtensions &ext);
+    EglImageFactory();
+    bool initializeEGL(IFFmpegRenderer* eglRenderer, EGLDisplay, const EGLExtensions &ext);
     void resetCache();
 
 #ifdef HAVE_DRM