crypto: hisilicon/qm - update irqflag

There is no need to share IRQ among several devices,
and set 'irqflag' as 0.

Signed-off-by: Sihang Chen <chensihang1@hisilicon.com>
Signed-off-by: Weili Qian <qianweili@huawei.com>
Reviewed-by: Zaibo Xu <xuzaibo@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>