crypto: tcrypt - add SM4 cts-cbc/xts/xcbc test

Added CTS-CBC/XTS/XCBC tests for SM4 algorithms, as well as
corresponding speed tests, this is to test performance-optimized
implementations of these modes.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>