cmake HAVE_FFDHE_2048 examples

Jackarain/proxy third_party/wolfssl/CMakeLists.txt :1371 

list(APPEND WOLFSSL_DEFINITIONS "-DHAVE_FFDHE_2048")

wolfSSL/wolfssl CMakeLists.txt :1694 

list(APPEND WOLFSSL_DEFINITIONS "-DHAVE_FFDHE_2048")