sh: intc: Make global intc controller counter static.

No need to expose this globally since it's only used for core accounting.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

drivers/sh/intc/core.c

@@ -35,7 +35,7 @@
 
 LIST_HEAD(intc_list);
 DEFINE_RAW_SPINLOCK(intc_big_lock);
-unsigned int nr_intc_controllers;
+static unsigned int nr_intc_controllers;
 
 /*
  * Default priority level

drivers/sh/intc/internals.h

@@ -157,7 +157,6 @@ void _intc_enable(struct irq_data *data, unsigned long handle);
 /* core.c */
 extern struct list_head intc_list;
 extern raw_spinlock_t intc_big_lock;
-extern unsigned int nr_intc_controllers;
 extern struct bus_type intc_subsys;
 
 unsigned int intc_get_dfl_prio_level(void);