cpufeatures: use #[cold] for initialization code
#1676
| Job | Run time |
|---|---|
| 3m 6s | |
| 39s | |
| 23s | |
| 4m 8s |
#[cold] for initialization code
#1676
| Job | Run time |
|---|---|
| 3m 6s | |
| 39s | |
| 23s | |
| 4m 8s |