Adding ordinal enums to kernel modules.

Access via xe::kernel::modules::xboxkrnl::ordinals::MyFunction
(or just ordinals::MyFunction when in the namespace).
Some collisions occurred - just added random suffixes for now.

src/xenia/kernel/modules/xboxkrnl/sources.gypi

@@ -11,6 +11,7 @@
     'xboxkrnl_memory.h',
     'xboxkrnl_module.cc',
     'xboxkrnl_module.h',
+    'xboxkrnl_ordinals.h',
     'xboxkrnl_rtl.cc',
     'xboxkrnl_rtl.h',
     'xboxkrnl_table.inc',