[PATCH] dma-buf: Add forward declaration of struct seq_file in dma-fence.h

[Herbert Xu]

Add forward declaration of struct seq_file before using it in
function prototype.

Fixes: a25efb3863d0 ("dma-buf: add dma_fence_describe and dma_resv_describe v2")
Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au>

diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h
index e7ad819962e3..b751ae49d007 100644
--- a/include/linux/dma-fence.h
+++ b/include/linux/dma-fence.h
@@ -26,6 +26,7 @@
 struct dma_fence;
 struct dma_fence_ops;
 struct dma_fence_cb;
+struct seq_file;
 
 /**
  * struct dma_fence - software synchronization primitive
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt