net: hns3: fix for rss result nonuniform

The rss result is more uniform when use recommended hash key from
microsoft, instead of the one generated by netdev_rss_key_fill().
Also using hash algorithm "xor" is better than "toeplitz".

This patch modifies the default hash key and hash algorithm.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>