[BUG] No Custom Paths for EDAC scraping

[andysharma24]

I noticed that the edac scraping in node-exporter is hard coded to a path.

var (
	edacMemControllerRE = regexp.MustCompile(`.*devices/system/edac/mc/mc([0-9]*)`)
	edacMemCsrowRE      = regexp.MustCompile(`.*devices/system/edac/mc/mc[0-9]*/csrow([0-9]*)`)
)

from this file. I believe this is a bug/oversight as we can set the actual sysfs with args, but not the path that the edac is scraped from.