Fix perfscope when drawing y2title with multi-core
Created by: jimmysitu
Hi, @TomTheBear
I found there is an issue when likwid-perfscope drawing multi-core events curves
likwid-perfscope -t 1s -g L3 -c 0,4 likwid-bench -s 5s -t stream_avx -w S0:1MB:2
- Only one curve align to y2
- Core events are not align to the right core legends
I fixed this issue with the PR