cmake HAVE_NL80211_CMD_SET_CHANNEL examples

boundary/wireshark ConfigureChecks.cmake :97

check_c_source_compiles(
	"#include <linux/nl80211.h>
	int main() {
		enum nl80211_commands x = NL80211_CMD_SET_CHANNEL;
	}"
	HAVE_NL80211_CMD_SET_CHANNEL
)