security/d0_blind_id: pacify portlint after r482123

Tools/scripts/bump-revision.sh doesn't handle PORTVERSION +
DISTVERSIONPREFIX well, so switch to DISTVERSION.

$ portlint -C
FATAL: Makefile: PORTVERSION appears out-of-order.
FATAL: Makefile: order must be PORTNAME/PORTVERSION/DISTVERSIONPREFIX/DISTVERSION/DISTVERSIONSUFFIX/PORTREVISION/PORTEPOCH/CATEGORIES/MASTER_SITES/MASTER_SITE_SUBDIR/PROJECTHOST/PKGNAMEPREFIX/PKGNAMESUFFIX/DISTNAME/EXTRACT_SUFX/DISTFILES/DIST_SUBDIR/EXTRACT_ONLY.