alinux: random: speed up the initialization of module

maillist inclusion
category: performance
bugzilla: https://gitee.com/openeuler/kernel/issues/I8K30G
CVE: NA

Reference: https://gitee.com/openeuler/kernel/commit/ae624897ce3846524a3b0d3e525d8f8a8f80f326



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alinux: random: speed up the initialization of module

During the module initialization phase, entropy will be added
to entropy pool for every interrupt, the change should speed up
initialization of the random module.

Before optimization:
[   22.180236] random: crng init done

After optimization:
[    1.474832] random: crng init done

Signed-off-by: Xingjun Liu <xingjun.lxj@alibaba-inc.com>
Reviewed-by: Liu Jiang <gerry@linux.alibaba.com>
Reviewed-by: Caspar Zhang <caspar@linux.alibaba.com>
Reviewed-by: Jia Zhang <zhang.jia@linux.alibaba.com>
Reviewed-by: Yang Shi <yang.shi@linux.alibaba.com>
Reviewed-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Chen Jialong <chenjialong@huawei.com>
Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Reviewed-by: Ziyuan Hu <huziyuan@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Signed-off-by: GUO Zihua <guozihua@huawei.com>