cmake HAVE_SYSLOG_FUNC examples

ovsky/sumi-emu externals/libusb/CMakeLists.txt :249 

check_function_exists(syslog HAVE_SYSLOG_FUNC)

Tinob/Ishiiruka Externals/libusb/CMakeLists.txt :104 

check_function_exists(syslog HAVE_SYSLOG_FUNC)

mandarine3ds/mandarine externals/libusb/CMakeLists.txt :136 

check_function_exists(syslog HAVE_SYSLOG_FUNC)