KVM: selftests: Report enable_pmu module value when test is skipped

Running x86_64/pmu_event_filter_test or x86_64/vmx_pmu_caps_test
with enable_pmu globally disabled will report the following into:
	1..0 # SKIP - Requirement not met: use_intel_pmu() || use_amd_pmu()
or
	1..0 # SKIP - Requirement not met: kvm_cpu_has(X86_FEATURE_PDCM)
this can be confusing, so add a check on kvm.enable_pmu.
Signed-off-by: Like Xu <likexu@tencent.com>
Link: https://lore.kernel.org/r/20230313085311.25327-3-likexu@tencent.comSigned-off-by: Sean Christopherson <seanjc@google.com>

tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c

@@ -764,6 +764,7 @@ int main(int argc, char *argv[])
 	struct kvm_vcpu *vcpu, *vcpu2 = NULL;
 	struct kvm_vm *vm;
 
+	TEST_REQUIRE(get_kvm_param_bool("enable_pmu"));
 	TEST_REQUIRE(kvm_has_cap(KVM_CAP_PMU_EVENT_FILTER));
 	TEST_REQUIRE(kvm_has_cap(KVM_CAP_PMU_EVENT_MASKED_EVENTS));
 

tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c

@@ -55,6 +55,7 @@ int main(int argc, char *argv[])
 	/* Create VM */
 	vm = vm_create_with_one_vcpu(&vcpu, guest_code);
 
+	TEST_REQUIRE(get_kvm_param_bool("enable_pmu"));
 	TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_PDCM));
 
 	TEST_REQUIRE(kvm_cpu_has_p(X86_PROPERTY_PMU_VERSION));