Use <linux/eventpoll.h> to implement <sys/epoll.h>.

Bug: https://github.com/android-ndk/ndk/issues/302
Test: builds
Change-Id: Ia3074326a128c38f2488e342c028cc030801cfd9
diff --git a/libc/kernel/tools/defaults.py b/libc/kernel/tools/defaults.py
index d5577da..620bb31 100644
--- a/libc/kernel/tools/defaults.py
+++ b/libc/kernel/tools/defaults.py
@@ -75,6 +75,8 @@
     "SIGRTMAX": "__SIGRTMAX",
     # We want to support both BSD and Linux member names in struct udphdr.
     "udphdr": "__kernel_udphdr",
+    # The kernel's struct epoll_event just has __u64 for the data.
+    "epoll_event": "__kernel_uapi_epoll_event",
     }
 
 # this is the set of known static inline functions that we want to keep
diff --git a/libc/kernel/uapi/linux/eventpoll.h b/libc/kernel/uapi/linux/eventpoll.h
index ec51b9f..6c7e355 100644
--- a/libc/kernel/uapi/linux/eventpoll.h
+++ b/libc/kernel/uapi/linux/eventpoll.h
@@ -37,7 +37,7 @@
 #define EPOLL_PACKED
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-struct epoll_event {
+struct __kernel_uapi_epoll_event {
   __u32 events;
   __u64 data;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */