kernel: Add defination of .init_array and .fini_array for all other platforms

[zlei]

Summary

In memoriam: hselasky
Obtained from: https://reviews.freebsd.org/D40467
MFC after: 1 week

[zlei]

This is split from D40467 with fixing the order of .fini_array section.

[mjg]

This needs to retain proper authorship, so the Author field still needs to be hps. Add the end of the commit message you should mention this was extracted by you from a bigger patch of his. So add that, drop "in memoriam".

I have no comments on the patch itself.