kvm: fix regression 5a52ca7 (apache#11342)

Somehow the commit 5a52ca7 was reverted
so cloud-init templates don't work on arm64 anymore :(

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Author: yadvr

plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtVMDef.java

@@ -277,9 +277,7 @@ public String toString() {
                         guestDef.append("<boot dev='" + bo + "'/>\n");
                     }
                 }
-                if (_arch == null || ! (_arch.equals("aarch64") || _arch.equals("s390x"))) { // simplification of (as ref.) (!(_arch != null && _arch.equals("s390x")) || (_arch == null || !_arch.equals("aarch64")))
-                    guestDef.append("<smbios mode='sysinfo'/>\n");
-                }
+                guestDef.append("<smbios mode='sysinfo'/>\n");
                 guestDef.append("</os>\n");
                 if (iothreads) {
                     guestDef.append(String.format("<iothreads>%s</iothreads>", NUMBER_OF_IOTHREADS));