selftests: kvm/x86/xen: Replace a comma in the xen_shinfo_test with semicolon

+WARNING: Possible comma where semicolon could be used
+#397: FILE: tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c:700:
++				tmr.type = KVM_XEN_VCPU_ATTR_TYPE_TIMER,
++				vcpu_ioctl(vm, VCPU_ID, KVM_XEN_VCPU_GET_ATTR, &tmr);

Fixes: 25eaeebe ("KVM: x86/xen: Add self tests for KVM_XEN_HVM_CONFIG_EVTCHN_SEND")
Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220406063715.55625-4-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>