KVM: SVM: Make avic_ga_log_notifier() local to avic.c

Make amd_iommu_register_ga_log_notifier() a local symbol now that it's
defined and used purely within avic.c.

No functional change intended.

Fixes: 4bdec12 ("KVM: SVM: Detect X2APIC virtualization (x2AVIC) support")
Link: https://patch.msgid.link/20251016190643.80529-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

Author: sean-jc

arch/x86/kvm/svm/avic.c

@@ -216,7 +216,7 @@ static void avic_deactivate_vmcb(struct vcpu_svm *svm)
  * This function is called from IOMMU driver to notify
  * SVM to schedule in a particular vCPU of a particular VM.
  */
-int avic_ga_log_notifier(u32 ga_tag)
+static int avic_ga_log_notifier(u32 ga_tag)
 {
 	unsigned long flags;
 	struct kvm_svm *kvm_svm;

arch/x86/kvm/svm/svm.h

@@ -806,7 +806,6 @@ extern struct kvm_x86_nested_ops svm_nested_ops;
 
 bool __init avic_hardware_setup(void);
 void avic_hardware_unsetup(void);
-int avic_ga_log_notifier(u32 ga_tag);
 void avic_vm_destroy(struct kvm *kvm);
 int avic_vm_init(struct kvm *kvm);
 void avic_init_vmcb(struct vcpu_svm *svm, struct vmcb *vmcb);