package/libgpg-error: add or1k support

or1k is supported since version 1.18 and
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgpg-error.git;a=commit;h=c143fa81462584ad39ea780908266bce3fb9a49e



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Reviewed-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>