init.sh: only create cache/ here

also, the check is -e, not -d, because we
might be operating on a symlink.

it's a bit hacky but this should work.

the previous change (now reverted) broke
re-use of the main cache/ in release work
directories.

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/init.sh

@@ -60,6 +60,10 @@ xbmk_init()
 	export PWD="$xbmkpwd"
 	x_ xbmkdir "$basetmp"
 
+	if [ ! -e "cache" ]; then
+		x_ xbmkdir "cache"
+	fi
+
 	for init_cmd in get_version set_env set_threads git_init child_exec; do
 		if ! xbmk_$init_cmd "$@"; then
 			break