Fix wrong ifdef in lapi/fs.h

This fixes compilation in the cases where struct file_clone_range is
defined in system headers. The problem was that the
HAVE_FILE_CLONE_RANGE should have been HAVE_STRUCT_FILE_CLONE_RANGE.

Fixes: 3acc96d ("Add fallback definitions for lapi/fs.h")
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>

include/lapi/fs.h

@@ -10,18 +10,16 @@
 #define LAPI_FS_H__
 
 #include "config.h"
-#ifndef HAVE_MOUNT_SETATTR
-# ifdef HAVE_LINUX_FS_H
-#  include <linux/fs.h>
-# endif
+#ifdef HAVE_LINUX_FS_H
+# include <linux/fs.h>
 #endif
 
 #include <sys/user.h>
 #include <limits.h>
 #include <stdint.h>
 #include "lapi/abisize.h"
 
-#ifndef HAVE_FILE_CLONE_RANGE
+#ifndef HAVE_STRUCT_FILE_CLONE_RANGE
 struct file_clone_range {
 	int64_t src_fd;
 	uint64_t src_offset;