Rename epoll_amd64.go to epoll.go

Signed-off-by: Lei Jitang <leijitang@huawei.com>

archutils/epoll.go

@@ -0,0 +1,18 @@
+//+build !arm64,linux
+package archutils
+
+import (
+	"syscall"
+)
+
+func EpollCreate1(flag int) (int, error) {
+	return syscall.EpollCreate1(flag)
+}
+
+func EpollCtl(epfd int, op int, fd int, event *syscall.EpollEvent) error {
+	return syscall.EpollCtl(epfd, op, fd, event)
+}
+
+func EpollWait(epfd int, events []syscall.EpollEvent, msec int) (int, error) {
+	return syscall.EpollWait(epfd, events, msec)
+}