games/stockfish: use mk/atomic64.mk since this uses that feature. Fixes build on NetBSD/macppc.diff -r1.2 -r1.3 pkgsrc/games/stockfish/Makefile
(he)
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.2 2019/12/20 00:00:55 joerg Exp $
+# $NetBSD: Makefile,v 1.3 2022/09/17 17:25:54 he Exp $
DISTNAME= stockfish-9-src
PKGNAME= ${DISTNAME:S/-src//}
@@ -23,4 +23,5 @@
${INSTALL_PROGRAM} ${WRKSRC}/stockfish ${DESTDIR}${PREFIX}/bin
${INSTALL_DATA} ${WRKDIR}/Readme.md ${DESTDIR}${PREFIX}/share/doc/stockfish
+.include "../../mk/atomic64.mk"
.include "../../mk/bsd.pkg.mk"