cryptsetup: fix Argon2 with OpenSSL built without it

cryptsetup: fix Argon2 with OpenSSL built without it

OpenWrt builds OpenSSL with no-blake2, which OpenSSL's Configure turns
into no-argon2 because Argon2 is built on BLAKE2b. The cryptsetup
configure script only looks for the OSSL_KDF_PARAM_ARGON2_VERSION macro,
which such a build still installs, so it drops the bundled Argon2 and
EVP_KDF_fetch() fails at runtime. Every LUKS2 keyslot using Argon2 then
fails instantly with "Keyslot open failed", and cryptsetup benchmark
reports argon2id as N/A. Add a patch that also checks OPENSSL_NO_ARGON2
so the bundled implementation is used again.

Fixes: fbac2e7861fb ("cryptsetup: update to 2.8.7")
Signed-off-by: Daniel Golle <redacted>