hikey: gralloc: Change to allow gralloc_priv.h to be shared

Change how we include files, so that other projects can
inlcude the gralloc_priv.h file here.

Change-Id: I07537e2b4794595d3c2e0a0b150bad1ab9d63ca8
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/gralloc/gralloc_priv.h b/gralloc/gralloc_priv.h
index 71920e0..40ca94f 100644
--- a/gralloc/gralloc_priv.h
+++ b/gralloc/gralloc_priv.h
@@ -28,7 +28,7 @@
 
 #include <hardware/gralloc.h>
 #include <cutils/native_handle.h>
-#include <alloc_device.h>
+#include "alloc_device.h"
 #include <utils/Log.h>
 
 #ifdef MALI_600