net/hinic: Solve the problem that the network card hangs when receiving the skb which frag_size=0

driver inclusion
category:bugfix
bugzilla:31091
CVE:NA

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To solve the problem that the network card hangs when receiving the skb which frag_size=0

In order to solve this problem, hinic driver adds a judgment on the legality of frag_size
in tx process. If size of lastest frags are all zero, hinic driver will ignore this
frags. If size of some frags in the middle is zero, hinic driver will drop this skb.

Signed-off-by: Shaozhengchao <shaozhengchao@huawei.com>
Reviewed-by: Luoshaokai <luoshaokai@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>