[cogl/cogl-1.20] Include deprecated header for cogl_read_pixels()

[Emmanuele Bassi <ebassi src gnome org>]

commit c5dc9542d5c37c98a12aa16c4ea24211c768764f
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Jun 10 14:14:06 2015 +0100

    Include deprecated header for cogl_read_pixels()
    
    Avoids a compiler warning for a missing declaration.

 cogl/cogl.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/cogl/cogl.c b/cogl/cogl.c
index 6cc73d0..577ae72 100644
--- a/cogl/cogl.c
+++ b/cogl/cogl.c
@@ -59,6 +59,8 @@
 #include "cogl-attribute-gl-private.h"
 #include "cogl-clutter.h"
 
+#include "deprecated/cogl-framebuffer-deprecated.h"
+
 CoglFuncPtr
 cogl_get_proc_address (const char* name)
 {