Fix telegraf 1.22.0 build on OpenBSD/arm64:

../../../go/pkg/mod/github.com/shirou/gopsutil/v3@v3.22.2/cpu/cpu_openbsd.go:63:14: undefined: cpuTimes

cpu/cpu_openbsd_arm64.go

@@ -0,0 +1,10 @@
+package cpu
+
+type cpuTimes struct {
+	User uint64
+	Nice uint64
+	Sys  uint64
+	Spin uint64
+	Intr uint64
+	Idle uint64
+}