staging: lustre: move lnet_debug_log_upcall declaration to tracefile.h

Both files that use this variable include tracefile.h, and it
seems a more suitable home for the declaration.
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/include/linux/libcfs/libcfs.h

@@ -103,11 +103,6 @@ static inline int notifier_from_ioctl_errno(int err)
 
 int libcfs_setup(void);
 
-/**
- * The path of debug log dump upcall script.
- */
-extern char lnet_debug_log_upcall[1024];
-
 extern struct workqueue_struct *cfs_rehash_wq;
 
 void lustre_insert_debugfs(struct ctl_table *table);

drivers/staging/lustre/lnet/libcfs/tracefile.h

@@ -49,6 +49,11 @@ enum cfs_trace_buf_type {
 extern char cfs_tracefile[TRACEFILE_NAME_SIZE];
 extern long long cfs_tracefile_size;
 
+/**
+ * The path of debug log dump upcall script.
+ */
+extern char lnet_debug_log_upcall[1024];
+
 void libcfs_run_debug_log_upcall(char *file);
 
 int  cfs_tracefile_init_arch(void);