RDS: Move atomic stats from general to ib-specific area

Signed-off-by: Andy Grover <andy.grover@oracle.com>
diff --git a/net/rds/ib.h b/net/rds/ib.h
index 4c2ee24..c506604 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -202,6 +202,8 @@
 	uint64_t	s_ib_rdma_mr_pool_flush;
 	uint64_t	s_ib_rdma_mr_pool_wait;
 	uint64_t	s_ib_rdma_mr_pool_depleted;
+	uint64_t	s_ib_atomic_cswp;
+	uint64_t	s_ib_atomic_fadd;
 };
 
 extern struct workqueue_struct *rds_ib_wq;