share_pool: Update kernel-doc comments

ascend inclusion
category: doc
bugzilla: https://gitee.com/openeuler/kernel/issues/I4EUVI


CVE: NA

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Update function documentation, this also fix warnings:
Function parameter or member 'PARAM_NAME' not described in 'FUNC_NAME'

Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Reviewed-by: Ding Tianhong <dingtianhong@huawei.com>
Reviewed-by: Kefeng <Wang&lt;wangkefeng.wang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>