Add symlink for POWER8E DD 2.1

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Add Makefile with check target

Run the json through jq to check it is valid json.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Convert power8.json to valid JSON

JSON does not allow trailing commas. Some parsers will accept it, but
not all.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Drop unsupported L2/L3 events

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>