crypto: hisilicon/hpre - add two RAS correctable errors processing

1.One CE error is detecting timeout of generating a random number.
2.Another is detecting timeout of SVA prefetching address.

Signed-off-by: Hui Tang <tanghui20@huawei.com>
Reviewed-by: Zaibo Xu <xuzaibo@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>