block: add precise io accouting apis

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6L586


CVE: NA

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Currently, for bio-based device, 'ios' and 'sectors' is counted while
io is started, while 'nsecs' is counted while io is done.

This behaviour is obviously wrong, however we can't fix exist kapis
because this will require new parameter, which will cause kapi broken.
Hence this patch add some new apis, which will make sure io accounting
for bio-based device is precise.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>