net: phy: marvell: logical vs bitwise OR typo

This was supposed to be a bitwise OR but there is a || vs | typo.

Fixes: 864dc729 ("net: phy: marvell: Refactor m88e1121 RGMII delay configuration")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>