csky: bugfix libc sync_file_range.c for csky.

Use __NR_sync_file_range2 for csky sync_file_range function.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>

libc/sysdeps/linux/common/sync_file_range.c

@@ -27,7 +27,7 @@ static int __NC(sync_file_range)(int fd, off64_t offset, off64_t nbytes, unsigne
 	return INLINE_SYSCALL(sync_file_range, 6, fd,
 			OFF64_HI_LO(offset), OFF64_HI_LO(nbytes), flags);
 #  elif (defined __mips__ && _MIPS_SIM == _ABIO32) || \
-	(defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) && !(defined(__powerpc__) || defined(__xtensa__) || defined(__nds32__)))
+	(defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) && !(defined(__powerpc__) || defined(__xtensa__) || defined(__nds32__) || defined(__csky__)))
 	/* arch with 64-bit data in even reg alignment #2: [arcv2/others-in-future]
 	 * stock syscall handler in kernel (reg hole punched)
 	 * see libc/sysdeps/linux/common/posix_fadvise.c for more details */