Add the copy_file_range() syscall to ARM.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
 #define __NR_userfaultfd               (__NR_SYSCALL_BASE+388)
 #define __NR_membarrier                        (__NR_SYSCALL_BASE+389)
 #define __NR_mlock2                    (__NR_SYSCALL_BASE+390)
+#define __NR_copy_file_range           (__NR_SYSCALL_BASE+391)
 
 /*
  * The following SWIs are ARM private.
 
                CALL(sys_userfaultfd)
                CALL(sys_membarrier)
                CALL(sys_mlock2)
+               CALL(sys_copy_file_range)
 #ifndef syscalls_counted
 .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
 #define syscalls_counted