Add in missing events for Sandy Bridge Xeon.
- Add in MEM_LOAD_UOPS_LLC_HIT_RETIRED for both sandy bridge and sandy bridge Xeon. Right now it only is enabled for Sandy Bridge.
- D2/0F is actually a combination rather than a separate counter, so just flip that on for the CPU types that support it.
There's an errata for using this on SB Xeon hardware - I've documented
it in kern/181346.
Tested:
- Sandy Bridge
- Sandy Bridge Xeon
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