KVM: x86: make hwapic_isr_update and hwapic_irr_update look the same

Neither APICv nor AVIC actually need the first argument of
hwapic_isr_update, but the vCPU makes more sense than passing the
pointer to the whole virtual machine!  In fact in the APICv case it's
just happening that the vCPU is used implicitly, through the loaded VMCS.

The second argument instead is named differently, make it consistent.

Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/svm.c

@@ -4202,7 +4202,7 @@ static void svm_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr)
 {
 }
 
-static void svm_hwapic_isr_update(struct kvm *kvm, int isr)
+static void svm_hwapic_isr_update(struct kvm_vcpu *vcpu, int max_isr)
 {
 }