mkinitcpio: Allow additional argument to preset options
Sometimes it might be handy to add arguments to the preset options. For instance if you are testing a new mkinitcpio feature with a preexisting preset.
This patch allows us to use any arguments passed after "--" as an extension to the preset options array.
mkinitcpio -p linux -- --uefi /efi/EFI/Linux/systemd-linux.efi --microcode /boot/intel-ucode.img
Would use "linux.preset" and append the --uefi and --microcode flags to the preset option arrays.
Signed-off-by: Morten Linderud morten@linderud.pw