security/seclists: Add license files

- Restore LICENSE_FILE for GPLv2+ that was removed with commit
  4acd06e, as the note about
  avoiding installing GPL licenses in section 13.20 of the Porter's
  handbook has been removed by commit
  e3f1471c227dfc4a557286072a020e62856bf0d9 of the doc repository.
- Add LICENSE_FILE for GPLv2.

Approved by:	gerald (mentor)

security/seclists/Makefile

@@ -1,12 +1,15 @@
 PORTNAME=	seclists
 DISTVERSION=	2022.2
+PORTREVISION=	1
 CATEGORIES=	security www
 
 MAINTAINER=	salvadore@FreeBSD.org
 COMMENT=	Collection of multiple types of lists used during security assessments
 
 LICENSE=	GPLv2 GPLv2+ MIT
 LICENSE_COMB=	multi
+LICENSE_FILE_GPLv2=	${WRKSRC}/Discovery/Web-Content/Domino-Hunter/LICENCE
+LICENSE_FILE_GPLv2+ =	${WRKSRC}/Web-Shells/laudanum-0.8/GPL
 LICENSE_FILE_MIT=	${WRKSRC}/LICENSE
 
 USE_GITHUB=	yes