When ecb is used to wrap an lskcipher, the statesize isn't set
correctly.  Fix this by making the simple instance creator set
the statesize.

Reported-by:  <syzbot+8ffb0839a24e9c6bfa76@syzkaller.appspotmail.com>
Reported-by: Edward Adam Davis <eadavis@qq.com>
Fixes: 662ea18d ("crypto: skcipher - Make use of internal state")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>