Build error on openrisc with CONFIG_CRYPTO_LIB_CURVE25519

In building 5.15.46 & 5.10.121 with CRYPTO_LIB_CURVE25519=m I get the following. My workaround is to leave it as CRYPTO_LIB_CURVE25519=n for now.

CONFIG_OR1K_1200=y CONFIG_OPENRISC_BUILTIN_DTB="or1ksim"

sed 's/.ko$/.o/' modules.order | scripts/mod/modpost -o modules-only.symvers -i vmlinux.symvers -T - ERROR: modpost: "__crypto_memneq" [lib/crypto/libcurve25519.ko] undefined! make[1]: *** [scripts/Makefile.modpost:134: modules-only.symvers] Error 1 make[1]: *** Deleting file 'modules-only.symvers' make: *** [Makefile:1783: modules] Error 2