aarch64: Fix sysinfo test.

On AArch64 the kernel prints one "processor" (lower case 'p') line per
core.  As this was missing from the test data, virSysinfo was not
parsing any processors at all.

Fix the test data so the test now passes.

tests/sysinfodata/aarch64cpuinfo.data

 Processor	: AArch64 Processor rev 0 (aarch64)
+processor	: 0
 BogoMIPS	: 100.00
 
 Features	: fp asimd

tests/sysinfodata/aarch64sysinfo.expect

 <sysinfo type='smbios'>
   <processor>
     <entry name='socket_destination'>0</entry>
-    <entry name='type'>AArch64 Processor rev 0 (aarch64) </entry>
-  </processor>
-  <processor>
-    <entry name='socket_destination'>1</entry>
     <entry name='type'>AArch64 Processor rev 0 (aarch64)</entry>
   </processor>
 </sysinfo>