Fix arm64 darwin package def for OpenSSl

Summary: Backport of https://github.com/monero-project/monero/commit/fe5c2aec35970c545f50679a06d9231b13104c5a

Test Plan:

cd depends
HOST="arm64-apple-darwin" make openssl

This now successfuly compiles OpenSSL.

Reviewers: #bitcoin_abc, Fabien

Reviewed By: #bitcoin_abc, Fabien

Subscribers: Fabien

Differential Revision: https://reviews.bitcoinabc.org/D14039