tests: Fix virtio channel tests

As noticed by Eric, commit 8e28c5d4,
which fixed generation of virtio-serial port numbers, forgot to adjust
test files which resulted in make check failure.

tests/qemuxml2argvdata/qemuxml2argv-channel-virtio-auto.args

-LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -nodefconfig -nodefaults -monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -device virtio-serial-pci,id=virtio-serial0,max_ports=16,vectors=4,bus=pci.0,addr=0x2 -device virtio-serial-pci,id=virtio-serial1,bus=pci.0,addr=0xa -device virtio-serial-pci,id=virtio-serial2,bus=pci.0,addr=0x3 -hda /dev/HostVG/QEMUGuest1 -chardev pty,id=channel0 -device virtserialport,bus=virtio-serial0.0,nr=0,chardev=channel0,name=org.linux-kvm.port.0 -chardev pty,id=channel1 -device virtserialport,bus=virtio-serial1.0,nr=0,chardev=channel1,name=org.linux-kvm.port.foo -chardev pty,id=channel2 -device virtserialport,bus=virtio-serial1.0,nr=3,chardev=channel2,name=org.linux-kvm.port.bar -chardev pty,id=channel3 -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=channel3,name=org.linux-kvm.port.wizz -chardev pty,id=channel4 -device virtserialport,bus=virtio-serial1.0,nr=4,chardev=channel4,name=org.linux-kvm.port.ooh -chardev pty,id=channel5 -device virtserialport,bus=virtio-serial2.0,nr=0,chardev=channel5,name=org.linux-kvm.port.lla -usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -nodefconfig -nodefaults -monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -device virtio-serial-pci,id=virtio-serial0,max_ports=16,vectors=4,bus=pci.0,addr=0x2 -device virtio-serial-pci,id=virtio-serial1,bus=pci.0,addr=0xa -device virtio-serial-pci,id=virtio-serial2,bus=pci.0,addr=0x3 -hda /dev/HostVG/QEMUGuest1 -chardev pty,id=channel0 -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=channel0,name=org.linux-kvm.port.0 -chardev pty,id=channel1 -device virtserialport,bus=virtio-serial1.0,nr=1,chardev=channel1,name=org.linux-kvm.port.foo -chardev pty,id=channel2 -device virtserialport,bus=virtio-serial1.0,nr=3,chardev=channel2,name=org.linux-kvm.port.bar -chardev pty,id=channel3 -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=channel3,name=org.linux-kvm.port.wizz -chardev pty,id=channel4 -device virtserialport,bus=virtio-serial1.0,nr=4,chardev=channel4,name=org.linux-kvm.port.ooh -chardev pty,id=channel5 -device virtserialport,bus=virtio-serial2.0,nr=1,chardev=channel5,name=org.linux-kvm.port.lla -usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4

tests/qemuxml2xmloutdata/qemuxml2xmlout-channel-virtio-auto.xml

@@ -27,11 +27,11 @@
     <controller type='virtio-serial' index='2'/>
     <channel type='pty'>
       <target type='virtio' name='org.linux-kvm.port.0'/>
-      <address type='virtio-serial' controller='0' bus='0' port='0'/>
+      <address type='virtio-serial' controller='0' bus='0' port='1'/>
     </channel>
     <channel type='pty'>
       <target type='virtio' name='org.linux-kvm.port.foo'/>
-      <address type='virtio-serial' controller='1' bus='0' port='0'/>
+      <address type='virtio-serial' controller='1' bus='0' port='1'/>
     </channel>
     <channel type='pty'>
       <target type='virtio' name='org.linux-kvm.port.bar'/>
@@ -39,7 +39,7 @@
     </channel>
     <channel type='pty'>
       <target type='virtio' name='org.linux-kvm.port.wizz'/>
-      <address type='virtio-serial' controller='0' bus='0' port='1'/>
+      <address type='virtio-serial' controller='0' bus='0' port='2'/>
     </channel>
     <channel type='pty'>
       <target type='virtio' name='org.linux-kvm.port.ooh'/>
@@ -47,7 +47,7 @@
     </channel>
     <channel type='pty'>
       <target type='virtio' name='org.linux-kvm.port.lla'/>
-      <address type='virtio-serial' controller='2' bus='0' port='0'/>
+      <address type='virtio-serial' controller='2' bus='0' port='1'/>
     </channel>
     <memballoon model='virtio'/>
   </devices>