KVM: SVM: Annotate svm_x86_ops as __initdata

Tag svm_x86_ops with __initdata now the the struct is copied by value to
a common x86 instance of kvm_x86_ops as part of kvm_init().

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200321202603.19355-10-sean.j.christopherson@intel.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>