netbsd 10 add ppoll api support

Author: devnexen

libc-test/semver/netbsd.txt

@@ -1396,6 +1396,7 @@ posix_spawnattr_setschedpolicy
 posix_spawnattr_setsigdefault
 posix_spawnattr_setsigmask
 posix_spawnattr_t
+ppoll
 preadv
 pseudo_AF_HDRCMPLT
 pseudo_AF_KEY

src/unix/bsd/netbsdlike/netbsd/mod.rs

@@ -2798,7 +2798,12 @@ extern "C" {
         ts: *const ::timespec,
         sigmask: *const ::sigset_t,
     ) -> ::c_int;
-
+    pub fn ppoll(
+        fds: *mut ::pollfd,
+        nfds: ::nfds_t,
+        ts: *const ::timespec,
+        sigmask: *const ::sigset_t,
+    ) -> ::c_int;
     pub fn posix_spawn(
         pid: *mut ::pid_t,
         path: *const ::c_char,