dm-crypt: modify dm-crypt to rely on IV generation templates

hulk inclusion
category: feature
bugzilla: 20209
CVE: NA
---------------------------

This patch modifies the dm-crypt layer to rely on the IV generation
templates for generating IV. The dm-crypt layer won't divided the 'bio'
into sectors and passes each sector to the crypto driver any more. The
dm-crypt layer creates a scatterlist array to record all the data of the
'bio' and passes this scatterlist array to the crypto driver at one
time. This crypto driver could be some accelerator driver which can
process several sectors at one time.

This patch is based on the patchset originally started by
Binoy Jayan <binoy.jayan@linaro.org>
( crypto: Add IV generation algorithms
https://patchwork.kernel.org/patch/9803469/ )
Signed-off-by: NBinoy Jayan <binoy.jayan@linaro.org>
Signed-off-by: NXiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: NZhangXiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>