cmake HAVE_LINUX_NETLINK_H examples

Tinob/Ishiiruka Externals/libusb/CMakeLists.txt :99 

check_include_files(linux/netlink.h HAVE_LINUX_NETLINK_H)

aidanmcb1/Citra externals/libusb/CMakeLists.txt :130 

check_include_files(linux/netlink.h HAVE_LINUX_NETLINK_H)