New comment by ifreund on void-packages repository

https://github.com/void-linux/void-packages/pull/27305#issuecomment-748668539

Comment:
> @ifreund do you want to try the new partial PGO build? Imo it's fine as it is.

@st3r4g Since void uses `-O2` by default and foot [strongly recommends](https://codeberg.org/dnkl/foot/src/branch/master/INSTALL.md#performance-optimized-pgo) `-O3` for PGO builds I don't think it makes sense to enable them for the void package by default. Perhaps a default-disabled build option enabling `-O3` and PGO would be good to have though.