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: Paul Mundt <lethal@linux-sh.org>

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);