aries | p1: zram: remove the second argument of k[un]map_atomic()

Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: Humberto Borba <humberos@gmail.com>

Change-Id: I061bf4b6e1f89e514c289679de48983fd892cbe1