Add flag to BaselineCPU API to return detailed CPU features

Currently the virConnectBaselineCPU API does not expose the CPU features
that are part of the CPU's model.  This patch adds a new flag,
VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, that causes the API to explicitly
list all features that are part of that model.

Signed-off-by: Don Dugger <donald.d.dugger@intel.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

include/libvirt/libvirt.h.in

@@ -4007,6 +4007,15 @@ int virConnectCompareCPU(virConnectPtr conn,
                          unsigned int flags);
 
 
+/**
+ * virConnectBaselineCPUFlags
+ *
+ * Flags when getting XML description of a computed CPU
+ */
+typedef enum {
+    VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES  = (1 << 0),  /* show all features */
+} virConnectBaselineCPUFlags;
+
 /**
  * virConnectBaselineCPU:
  *