KVM: x86 emulator: fix the comment of out instruction

Fix the comment of out instruction, using the same style as the
other instructions.
Signed-off-by: NWei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

arch/x86/kvm/emulate.c

@@ -2949,8 +2949,8 @@ special_insn:
 				     &c->dst.val))
 			goto done; /* IO is needed */
 		break;
-	case 0xee: /* out al,dx */
-	case 0xef: /* out (e/r)ax,dx */
+	case 0xee: /* out dx,al */
+	case 0xef: /* out dx,(e/r)ax */
 		c->src.val = c->regs[VCPU_REGS_RDX];
 	do_io_out:
 		c->dst.bytes = min(c->dst.bytes, 4u);