Duplicate check for openssl/cmac.h

a04100c3 duplicates the check at a04100c3

CMAC support was added in OpenSSL 1.0.0. If your system has pkg-config, then each header isn't checked and instead pkg-config is queried. If we want to bound that check, then we should look for versions newer than The 1.0.0 (when CMAC was added) or 1.0.2 since that's the latest support version from upstream.

/cc @hal.murray