KVM: selftests: Convert ARM's vGIC IRQ test to printf style GUEST_ASSERT

Use printf-based guest assert reporting in ARM's vGIC IRQ test.  Note,
this is not as innocuous as it looks!  The printf-based version of
GUEST_ASSERT_EQ() ensures the expressions are evaluated only once, whereas
the old version did not!

Link: https://lore.kernel.org/r/20230729003643.1053367-15-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

tools/testing/selftests/kvm/aarch64/vgic_irq.c

@@ -7,6 +7,7 @@
  * host to inject a specific intid via a GUEST_SYNC call, and then checks that
  * it received it.
  */
+#define USE_GUEST_ASSERT_PRINTF 1
 
 #include <asm/kvm.h>
 #include <asm/kvm_para.h>
@@ -781,7 +782,7 @@ static void test_vgic(uint32_t nr_irqs, bool level_sensitive, bool eoi_split)
 			run_guest_cmd(vcpu, gic_fd, &inject_args, &args);
 			break;
 		case UCALL_ABORT:
-			REPORT_GUEST_ASSERT_2(uc, "values: %#lx, %#lx");
+			REPORT_GUEST_ASSERT(uc);
 			break;
 		case UCALL_DONE:
 			goto done;