config-all-devices.mak: rebuild on reconfigure

This ensures that softmmu directories are culled after a
"./configure --target-list=x86_64-linux-user".

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 file changed