New comment by dkwo on void-packages repository

https://github.com/void-linux/void-packages/pull/32636#issuecomment-904372769

Comment:
`lto` was introduced at https://github.com/void-linux/void-packages/commit/307b17aa426a161571c235644dcf208947a49ddf#
I will put it back for the moment.
Maybe @maxice8 can comment
(it seems Arch uses it as well, btw.)

Let me know what to do with grub.