efibootmgr can automatically generate EFI boot entries to
directly boot the kernel after every kernel update or installation.
Enable this by editing /etc/default/efibootmgr-kernel-hook.

The efi variables need to be accessible in order for this to work, so
add this line to your fstab and reboot or mount manually:
  efivarfs /sys/firmware/efi/efivars efivarfs 0 0
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Kernel cmd options can be configured in /etc/default/efibootmgr-kernel-hook,
but you always have to reconfigure the kernel:

	$ xbps-reconfigure -f linux4.8
	(or any other kernel version)

This is also required after the first installation of this package.
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The bootorder itself is not changed, so your previous boot loader will
stay enabled until you can edit the order in your firmware interface or
using "efibootmgr -o <hexnum>"
