maint: add missing symbols

Add missing symbols to libvirt_private.syms.

src/libvirt_private.syms

@@ -539,8 +539,11 @@ ifaceGetIndex;
 ifaceGetMacAddress;
 ifaceGetIPAddress;
 ifaceGetNthParent;
+ifaceGetPhysicalFunction;
+ifaceGetVirtualFunctionIndex;
 ifaceGetVlanID;
 ifaceIsUp;
+ifaceIsVirtualFunction;
 ifaceLinkDel;
 ifaceMacvtapLinkAdd;
 ifaceMacvtapLinkDump;
@@ -841,6 +844,7 @@ pciDettachDevice;
 pciDeviceFileIterate;
 pciDeviceGetManaged;
 pciDeviceIsAssignable;
+pciDeviceIsVirtualFunction;
 pciDeviceListAdd;
 pciDeviceListCount;
 pciDeviceListDel;
@@ -848,10 +852,14 @@ pciDeviceListFree;
 pciDeviceListGet;
 pciDeviceListNew;
 pciDeviceListSteal;
+pciDeviceNetName;
 pciDeviceReAttachInit;
 pciDeviceSetManaged;
 pciFreeDevice;
 pciGetDevice;
+pciGetPhysicalFunction;
+pciGetVirtualFunctionIndex;
+pciGetVirtualFunctions;
 pciReAttachDevice;
 pciResetDevice;
 pciWaitForDeviceCleanup;