New review comment by oreo639 on void-packages repository

https://github.com/void-linux/void-packages/pull/49146#discussion_r1515282714

Comment:
Use the system localedef when cross compiling and the recently built localedef when native compiling.
Also, make sure to pass `--big-endian` or `--little-endian` when cross compiling.

See: https://salsa.debian.org/glibc-team/glibc/-/blob/6c8b05d8a7138593c80908d5fe5b928d2ac038d6/debian/rules.d/build.mk#L340-358