RDMA/siw: Fix port number endianness in a debug message

sin_port and sin6_port are big endian member variables. Convert these port
numbers into CPU endianness before printing.

Link: https://lore.kernel.org/r/20190930231707.48259-5-bvanassche@acm.org


Fixes: 6c52fdc2 ("rdma/siw: connection management")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>