New comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/29098#issuecomment-787133921

Comment:
I think it would be reasonable to move the entire contents of this to README.voidlinux and make the install message nothing more than

> See /usr/share/doc/efibootmgr/README.voidlinux for instructions on using efibootmgr to automatically manage EFI boot entries.

I believe `/sys/firmware/efi/efivars` might automatically mounted by elogind for some reason. Systems without elogind probably need to mount it explicitly.