linux-user: AArch64 has sync_file_range, not sync_file_range2

The AArch64 Linux ABI syscall 84 is sync_file_range, not
sync_file_range2 (in the kernel it uses the asm-generic
headers and does not define __ARCH_WANT_SYNC_FILE_RANGE2).
Update our TARGET_NR_* definitions accordingly.

This fixes the sync_file_range syscall which otherwise
gets its arguments in the wrong order.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

linux-user/aarch64/syscall_nr.h

@@ -86,8 +86,7 @@
 #define TARGET_NR_sync 81
 #define TARGET_NR_fsync 82
 #define TARGET_NR_fdatasync 83
-#define TARGET_NR_sync_file_range2 84
-/* #define TARGET_NR_sync_file_range 84 */
+#define TARGET_NR_sync_file_range 84
 #define TARGET_NR_timerfd_create 85
 #define TARGET_NR_timerfd_settime 86
 #define TARGET_NR_timerfd_gettime 87