Revert "row: disable Deadline and CFQ I/O scheduler"

This reverts commit e988a7805c7cd03af036ba963c8899d0d05dad91.
IOSCHED:

default to cfq

Signed-off-by: SkipXS <sskkiipp@gmail.com>
defconfig: 2.2 stable

Signed-off-by: SkipXS <sskkiipp@gmail.com>