dev-haskell/dlist: Sync KEYWORDS

Signed-off-by: Mark Wright <gienah@gentoo.org>

Author: markwright

dev-haskell/dlist/dlist-1.0.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2025 Gentoo Authors
+# Copyright 1999-2026 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -15,7 +15,7 @@ HOMEPAGE="https://github.com/spl/dlist"
 
 LICENSE="BSD"
 SLOT="0/${PV}"
-KEYWORDS="~amd64"
+KEYWORDS="~amd64 ~arm64 ~ppc64 ~riscv ~x86"
 IUSE="werror"
 
 RDEPEND=">=dev-lang/ghc-9.0.2:=