--- xnu/xnu-792.25.20/iokit/KernelConfigTables.cpp
+++ xnu/xnu-792.1.5/iokit/KernelConfigTables.cpp
@@ -71,5 +71,13 @@
 "       'IONameMatch'           = nvram;"
 "   }"
 #endif /* PPC */
+#ifdef i386
+"   ,"
+"   {"
+"       'IOClass'           = AppleIntelClock;"
+"       'IOProviderClass'   = IOPlatformDevice;"
+"       'IONameMatch'       = intel-clock;"
+"   }"
+#endif /* i386 */
 ")";