[cogl] cogl/cogl-bitmap-conversion.c: Include missed header

[Neil Roberts <nroberts src gnome org>]

commit 4afe9dc1fea646e2a9576f9a0dbd1ffafa40485b
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Mon Aug 26 19:01:34 2013 +0800

    cogl/cogl-bitmap-conversion.c: Include missed header
    
    The cogl-texture-private.h needs to be included as
    _cogl_texture_needs_premult_conversion, so that we can avoid implicit
    declaration warnings of that symbol (aka C4013 on MSVC).
    
    Reviewed-by: Neil Roberts <neil linux intel com>

 cogl/cogl-bitmap-conversion.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/cogl/cogl-bitmap-conversion.c b/cogl/cogl-bitmap-conversion.c
index 7bc2f1d..08606b6 100644
--- a/cogl/cogl-bitmap-conversion.c
+++ b/cogl/cogl-bitmap-conversion.c
@@ -28,6 +28,7 @@
 #include "cogl-private.h"
 #include "cogl-bitmap-private.h"
 #include "cogl-context-private.h"
+#include "cogl-texture-private.h"
 
 #include <string.h>