fix ion_platform_data definition

fix ion_platform_heap to make is use an usual way in board configuration file.

Change-Id: I8686108a9fe0aa2ba9f9c84990d555f947f78f86
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
[lauraa: Fixup msm board files]
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
diff --git a/include/linux/ion.h b/include/linux/ion.h
index 85e5002..bb7af50 100644
--- a/include/linux/ion.h
+++ b/include/linux/ion.h
@@ -115,7 +115,7 @@
 	int (*request_region)(void *);
 	int (*release_region)(void *);
 	void *(*setup_region)(void);
-	struct ion_platform_heap heaps[];
+	struct ion_platform_heap *heaps;
 };
 
 #ifdef CONFIG_ION