QEMU supports AES, but by default it shows a minimal subset of CPU features so that the VM can be moved between physical machines and compiled code on one host will run on another host.

Add "-cpu host" to qemu commandline. But beware that the VM will not run properly on another machine that doesn't support same CPU features if you compile anything with "-march" flag.

[EDIT]: Also I don't see KVM enabled. Enable KVM with "-enable-kvm" qemu flag in command line.