ANTFS does not compile with OpenWrt's current testing kernel 5.15,
as it needs to be modified for the Linux 5.12 idmapped mounts changes
2f221d6f7b88 ("attr: handle idmapped mounts")
https://lore.kernel.org/all/20210121131959.646623-1-christian.brauner@ubuntu.com/
Signed-off-by: John Thomson <git@johnthomson.fastmail.com.au>
(cherry picked from commit f043d0a7d8)