emulators/yuzu: unbreak on FreeBSD < 12 after r552531

• Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR: Found unsuitable version "1.0.2u", but required is at least "1.1" (found /usr/lib/libcrypto.so, )

CMake Error at externals/CMakeLists.txt:83 (add_subdirectory):

In file included from src/core/hle/service/bcat/backend/boxcat.cpp:6:
externals/./httplib/httplib.h:214:2: error: Sorry, OpenSSL versions prior to 1.1.1 are not supported
#error Sorry, OpenSSL versions prior to 1.1.1 are not supported

^

Reported by: pkg-fallout