New review comment by Piraty on void-packages repository

https://github.com/void-linux/void-packages/pull/28000#discussion_r599455479

Comment:
after readin the cross build log,
```
aarch64-linux-musl-pkg-config: exec: "aarch64-linux-musl-pkg-config": executable file not found in $PATH
```
it's obvious you have to  `hostmakedepends="pkg-config"`
this makes it cross compile.
please remove the arch restriction if it's not necessary