KVM: VMX: use kvm_event_needs_reinjection

KVM: VMX: use kvm_event_needs_reinjection

Use kvm_event_needs_reinjection() encapsulation.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 274bba52a01d6de01f03cfb1b80af2d35772e62e)
Orabug: 27200329
Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Acked-by: Liran Alon <liran.alon@oracle.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>