net: hns3: add support customized exception handling interfaces.

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I6QRKC


CVE: NA

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Establish a framework to support customization requirement. Provides
interfaces to register special processing functions. When the system
is reset due to an abnormal interrupt, the registered handler is
called first.

Signed-off-by: Tian Jiang <jiangtian6@h-partners.com>
Signed-off-by: shaojijie <shaojijie@huawei.com>
Signed-off-by: Jiantao Xiao <xiaojiantao1@h-partners.com>