Can not use 'openssl' while ENABLE_BINARY_BUILD

[IkarosC]

CRYPTO only requires mbedtls and OpenSSL, but when ENABLE_BINARY_BUILD is enabled, CRYPTO is validated using Openssl.

set(CRYPTO ${CRYPTO} CACHE STRING "Choose the crypto of build: mbedtls openssl" FORCE)
...
if(CRYPTO STREQUAL "mbedtls")
    message("CRYPTO = mbedtls")
elseif(CRYPTO STREQUAL "openssl")
    message("CRYPTO = openssl")
else()
    message(FATAL_ERROR "Unkown CRYPTO")
endif()
...
if(ENABLE_BINARY_BUILD STREQUAL "1")
    if(NOT CRYPTO STREQUAL "Openssl")
        message(FATAL_ERROR "enabling binary build not supported for non-Openssl")
    endif()
.....