net/mlx4_core: Replace pr_warning() with pr_warn()

As checkpatch suggests. Also changed some printk's into pr_*

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/ethernet/mellanox/mlx4/cmd.c
Simple merge

diff --cc drivers/net/ethernet/mellanox/mlx4/main.c
Simple merge

diff --cc drivers/net/ethernet/mellanox/mlx4/mr.c
Simple merge

diff --cc drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
Simple merge