Warnings about executable segment

Binutils 2.39 introduced a new warning about executable segments: `warning: has a LOAD segment with RWX permissions`. This warning is emitted when a segment has both write and execute permissions.

There are two ways to fix this warning:

1. Just ignore it by `--no-warn-rwx-segments`. This warning is not an error, and it does not affect the generated binary.
2. Add essential gap between the `.text` and `.data` sections.

References: https://www.redhat.com/en/blog/linkers-warnings-about-executable-stacks-and-segments

Which should we do?