net/mlx4_en: fix a condition

There is a "||" vs "|" typo here so we test 0x1 instead of 0x6.

Fixes: 1f8176f7

 ("net/mlx4_en: Check the enabling pptx/pprx flags in SET_PORT wrapper flow")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>