cxgb4: Add llseek operation for flash debugfs entry

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 0bb41e9..9506c5c 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -1572,6 +1572,7 @@
 	.owner   = THIS_MODULE,
 	.open    = mem_open,
 	.read    = flash_read,
+	.llseek  = default_llseek,
 };
 
 static inline void tcamxy2valmask(u64 x, u64 y, u8 *addr, u64 *mask)