selftests/tls: add SM4 algorithm dependency for tls selftests

Kernel TLS test has added SM4 GCM/CCM algorithm support, but SM4
algorithm is not compiled by default, this patch add SM4 config
dependency.

Reported-by: Hangbin Liu <liuhangbin@gmail.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>