Turn off QEMU ACPI-way since new releases don't have shutdown port

anymore.

grub-core/tests/boot/qemu-shutdown-x86.S

@@ -1,18 +1,17 @@
 	movl $0x80000b80, %eax
 	movw $0xcf8, %dx
 	outl  %eax, %dx
-	movl $0x1001, %eax
 	movw $0xcfc, %dx
-	inb  %al, %dx
+	inb  %dx, %al
 	orb  $1, %al
 	outb  %al, %dx
 
 	movl $0x80000b40, %eax
 	movw $0xcf8, %dx
 	outl  %eax, %dx
-	movl $0x1001, %eax
+	movl $0x7001, %eax
 	movw $0xcfc, %dx
 	outl  %eax, %dx
 	movw $0x2000, %ax
-	movw $0x1004, %dx	
+	movw $0x7004, %dx	
 	outw  %ax, %dx