Add the main implementation of the controller reset interface, which is
roughly divided into three parts, stop, reset, and reinitialization.
Signed-off-by: NShukun Tan <tanshukun1@huawei.com>
Reviewed-by: NZhou Wang <wangzhou1@hisilicon.com>
Reviewed-by: NZaibo Xu <xuzaibo@huawei.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>