UPSTREAM: wireguard: kconfig: use arm chacha even with no neon

The condition here was incorrect: a non-neon fallback implementation is
available on arm32 when NEON is not supported.

Bug: 254441685
Reported-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
(cherry picked from commit bce2473927af8de12ad131a743f55d69d358c0b9)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: Ifbda8d9fc9e1f749a883d74c25c634fe82638b50