MAINTAINERS: Move mlx5 rdma header file to IB driver charge

It belongs there, should not be under mlx5 Core driver.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -8538,7 +8538,6 @@ Q:	http://patchwork.ozlabs.org/project/netdev/list/
 S:	Supported
 F:	drivers/net/ethernet/mellanox/mlx5/core/
 F:	include/linux/mlx5/
-F:	include/uapi/rdma/mlx5-abi.h
 
 MELLANOX MLX5 IB driver
 M:	Matan Barak <matanb@mellanox.com>
@@ -8549,6 +8548,7 @@ Q:	http://patchwork.kernel.org/project/linux-rdma/list/
 S:	Supported
 F:	drivers/infiniband/hw/mlx5/
 F:	include/linux/mlx5/
+F:	include/uapi/rdma/mlx5-abi.h
 
 MELEXIS MLX90614 DRIVER
 M:	Crt Mori <cmo@melexis.com>