schema: Add maxphysaddr element to hostcpu

The output of "virsh capabilities" was not conformant to the
capability.rng schema. Add the missing element to the schema.

Fixes: c647bf29afb9890c792172ecf7db2c9c27babbb6
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

src/conf/schemas/cputypes.rng

@@ -389,6 +389,9 @@
         <optional>
           <ref name="cpuTopology"/>
         </optional>
+        <optional>
+          <ref name="cpuMaxPhysAddr"/>
+        </optional>
         <zeroOrMore>
           <element name="feature">
             <attribute name="name">

tests/capabilityschemadata/caps-test.xml

@@ -4,6 +4,7 @@
     <cpu>
       <arch>i686</arch>
       <vendor>Intel</vendor>
+      <maxphysaddr mode='emulate' bits='46'/>
       <features>
         <pae/>
         <nonpae/>