x/sys: version parsing fails and should propagate fix from Go's runtime

[odeke-em]

We'll probably also want to fix x/sys: https://github.com/golang/sys/blob/01aaa83/cpu/parse.go#L17

/cc @prattmic @aclements

Originally posted by @bradfitz in #79612

/cc @dmitshur

[gabyhelp]

Related Issues

• runtime: version parsing fails [1.26 backport] #79893

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[gopherbot]

Change https://go.dev/cl/793760 mentions this issue: cpu: handle vendor suffixes in parseRelease