rename 2LM -> NM
rename 2LM -> NM

NM: Near Memory (DRAM cache) in Memory Mode
https://download.01.org/perfmon/CLX/cascadelakex_uncore_v1.00.json

Change-Id: I426be796a808119eff5c27ce1f9a940f41baa5ef

opcm/pcm,opcm/pcm,opcm/pcm,opcm/pcm