staging/lustre: clean function declaration in super25.c up

We get 1 warning when building kernel with W=1:
drivers/staging/lustre/lustre/obdclass/obd_config.c:719:6: warning: no previous prototype for 'lustre_register_client_process_config' [-Wmissing-prototypes]

In fact, this function is declared in
drivers/staging/lustre/lustre/llite/super25.c, but should be
moved into a header file, thus can be recognized in other file.

So this patch moves the declaration into
drivers/staging/lustre/lustre/include/lprocfs_status.h.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/include/lprocfs_status.h

@@ -363,6 +363,9 @@ static inline void s2dhms(struct dhms *ts, time64_t secs64)
 #define JOBSTATS_PROCNAME_UID		"procname_uid"
 #define JOBSTATS_NODELOCAL		"nodelocal"
 
+/* obd_config.c */
+void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg));
+
 int lprocfs_write_frac_helper(const char __user *buffer,
 			      unsigned long count, int *val, int mult);
 int lprocfs_read_frac_helper(char *buffer, unsigned long count,

drivers/staging/lustre/lustre/llite/super25.c

@@ -83,8 +83,6 @@ struct super_operations lustre_super_operations = {
 };
 MODULE_ALIAS_FS("lustre");
 
-void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg));
-
 static int __init lustre_init(void)
 {
 	lnet_process_id_t lnet_id;