qlcnic: fix endianess for lro

ipaddress in ifa->ifa_address field are in big endian format.
Also device requires ip address in big endian only.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>