build/cross_tools_gcc4: explicit disable libatomic and libgomp

Change-Id: If8cad96420cd249106c611aaf59353adab1271ee
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3897
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

build/scripts/build_cross_tools_gcc4

@@ -240,6 +240,8 @@ CFLAGS="$ccFlags" CXXFLAGS="$cxxFlags" "$gccSourceDir/configure" \
 	--with-default-libstdcxx-abi=gcc4-compatible \
 	--with-sysroot="$sysrootDir" \
 	--disable-maintainer-mode \
+	--disable-libgomp \
+	--disable-libatomic \
 	$gccConfigureArgs \
 	|| exit 1