archiso/initcpio/install/archiso: fix GnuPG home directory permissions
Gets rid of a gpg warning:
gpg: WARNING: unsafe permissions on homedir '/tmp/mkinitcpio.*/root/gpg'
Due to an influx of spam, we have had to temporarily disable account registrations. Please write an email to accountsupport@archlinux.org, with your desired username, if you want to get access. Sorry for the inconvenience.
Gets rid of a gpg warning:
gpg: WARNING: unsafe permissions on homedir '/tmp/mkinitcpio.*/root/gpg'