md: replace strict_strto*() with kstrto*()

The usage of strict_strtoul() is not preferred, because
strict_strtoul() is obsolete. Thus, kstrtoul() should be
used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: NeilBrown <neilb@suse.de>

diff --cc drivers/md/bitmap.c
Simple merge

diff --cc drivers/md/dm-raid.c
Simple merge

diff --cc drivers/md/md.c
Simple merge

diff --cc drivers/md/raid5.c
Simple merge