Move fdtrack APIs to LLNDK.

Test: logcat -c; fdtrack_test; logcat -d
Change-Id: Ib6f75a7c8bbc4d6efa0708dcbbfe4ad3c0641022

libc/bionic/fdtrack.cpp

@@ -28,8 +28,7 @@
 
 #include <stdatomic.h>
 
-#include <android/fdtrack.h>
-
+#include <platform/bionic/fdtrack.h>
 #include <platform/bionic/reserved_signals.h>
 
 #include "private/bionic_fdtrack.h"

libc/libc.map.txt

@@ -1484,9 +1484,6 @@ LIBC_R { # introduced=R
   global:
     __mempcpy_chk;
     __tls_get_addr; # arm64
-    android_fdtrack_compare_exchange_hook;
-    android_fdtrack_get_enabled;
-    android_fdtrack_set_enabled;
     call_once;
     cnd_broadcast;
     cnd_destroy;
@@ -1755,6 +1752,9 @@ LIBC_PLATFORM {
     __system_property_set_filename;
     __system_property_update;
     android_fdsan_get_fd_table;
+    android_fdtrack_compare_exchange_hook; # llndk
+    android_fdtrack_get_enabled; # llndk
+    android_fdtrack_set_enabled; # llndk
     android_net_res_stats_get_info_for_net;
     android_net_res_stats_aggregate;
     android_net_res_stats_get_usable_servers;

libc/private/bionic_fdtrack.h

@@ -31,7 +31,7 @@
 #include <sys/cdefs.h>
 #include <stdatomic.h>
 
-#include <android/fdtrack.h>
+#include "platform/bionic/fdtrack.h"
 
 #include "bionic/pthread_internal.h"
 #include "private/bionic_tls.h"

libfdtrack/fdtrack.cpp

@@ -32,7 +32,7 @@
 #include <mutex>
 #include <vector>
 
-#include <android/fdtrack.h>
+#include <bionic/fdtrack.h>
 
 #include <android-base/no_destructor.h>
 #include <android-base/thread_annotations.h>

tests/fdtrack_test.cpp

@@ -25,7 +25,7 @@
 #include <unistd.h>
 
 #if defined(__BIONIC__)
-#include <android/fdtrack.h>
+#include "platform/bionic/fdtrack.h"
 #endif
 
 #include <vector>