multimedia/ffmpeg: allow LTO with Clang on powerpc64

multimedia/ffmpeg/Makefile

@@ -666,16 +666,10 @@ LICENSE_TEXT_NONFREE=	enabling OPENSSL or FDK_AAC restricts redistribution
 LICENSE_PERMS_NONFREE=	auto-accept
 .endif
 
-.include <bsd.port.pre.mk>
-
-.if ${ARCH} == powerpc64 && ${PORT_OPTIONS:MLTO} && ${CHOSEN_COMPILER_TYPE} == clang
-USE_GCC=	yes
-.endif
-
 post-install:
 	(cd ${WRKSRC} && ${COPYTREE_SHARE} \
 		"${DOC_FILES}" ${STAGEDIR}${DOCSDIR})
 	(cd ${WRKSRC}/doc && ${COPYTREE_SHARE} \
 		"${DOC_DOCFILES}" ${STAGEDIR}${DOCSDIR})
 
-.include <bsd.port.post.mk>
+.include <bsd.port.mk>