tests: qemuxml2xml: Convert aarch64-os-firmware-efi to TEST_CAPS

Demostrate DO_TEST_CAPS_ARCH_LATEST by converting the test case
'aarch64-os-firmware-efi'
Reviewed-by: NAndrea Bolognani <abologna@redhat.com>
Signed-off-by: NCole Robinson <crobinso@redhat.com>

tests/qemuxml2xmloutdata/aarch64-os-firmware-efi.aarch64-latest.xml

+<domain type='qemu'>
+  <name>aarch64test</name>
+  <uuid>496d7ea8-9739-544b-4ebd-ef08be936e8b</uuid>
+  <memory unit='KiB'>1048576</memory>
+  <currentMemory unit='KiB'>1048576</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os firmware='efi'>
+    <type arch='aarch64' machine='virt-4.0'>hvm</type>
+    <kernel>/aarch64.kernel</kernel>
+    <initrd>/aarch64.initrd</initrd>
+    <cmdline>earlyprintk console=ttyAMA0,115200n8 rw root=/dev/vda rootwait</cmdline>
+    <dtb>/aarch64.dtb</dtb>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <apic/>
+    <pae/>
+    <gic version='2'/>
+  </features>
+  <cpu mode='custom' match='exact' check='none'>
+    <model fallback='allow'>cortex-a53</model>
+  </cpu>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>restart</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='pci' index='0' model='pcie-root'/>
+  </devices>
+</domain>

tests/qemuxml2xmloutdata/aarch64-os-firmware-efi.xml

-../qemuxml2argvdata/aarch64-os-firmware-efi.xml
\ No newline at end of file

tests/qemuxml2xmltest.c

@@ -1010,8 +1010,7 @@ mymain(void)
     DO_TEST("aarch64-aavmf-virtio-mmio",
             QEMU_CAPS_DEVICE_VIRTIO_MMIO,
             QEMU_CAPS_DEVICE_VIRTIO_RNG, QEMU_CAPS_OBJECT_RNG_RANDOM);
-    DO_TEST("aarch64-os-firmware-efi",
-            QEMU_CAPS_DEVICE_VIRTIO_MMIO);
+    DO_TEST_CAPS_ARCH_LATEST("aarch64-os-firmware-efi", "aarch64");
     DO_TEST("aarch64-virtio-pci-default",
             QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY,
             QEMU_CAPS_DEVICE_VIRTIO_MMIO,