--- xnu/xnu-792.13.8/iokit/KernelConfigTables.cpp
+++ xnu/xnu-792.12.6/iokit/KernelConfigTables.cpp
@@ -79,5 +79,13 @@
 "       'IONameMatch'           = nvram;"
 "   }"
 #endif /* PPC */
+#ifdef i386
+"   ,"
+"   {"
+"       'IOClass'           = AppleIntelClock;"
+"       'IOProviderClass'   = IOPlatformDevice;"
+"       'IONameMatch'       = intel-clock;"
+"   }"
+#endif /* i386 */
 ")";