Comment # 5 on bug 1152773 from Takashi Iwai

SECCOMP_FILTER is available only when CONFIG_OABI_COMPAT=n.  It's explicitly
limited via commit 9170217510cd280c704966738e7c1660c8fa5cbd
    ARM: 7888/1: seccomp: not compatible with ARM OABI

And kernel-lpae defines this, so CONFIG_SECCOMP_FILTER isn't available there.