Blackfin: SMP: tweak platform_request_ipi() usage

This function takes an irq_handler_t function, but the prototype in
the header doesn't match the function definition.  This is due to the
smp headers needing to avoid circular dependencies.  So change the
function to take a simple pointer.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/mach-bf561/include/mach/smp.h b/arch/blackfin/mach-bf561/include/mach/smp.h
index 2c8c514..70cafb9 100644
--- a/arch/blackfin/mach-bf561/include/mach/smp.h
+++ b/arch/blackfin/mach-bf561/include/mach/smp.h
@@ -7,6 +7,8 @@
 #ifndef _MACH_BF561_SMP
 #define _MACH_BF561_SMP
 
+/* This header has to stand alone to avoid circular deps */
+
 struct task_struct;
 
 void platform_init_cpus(void);
@@ -17,7 +19,7 @@
 
 void platform_secondary_init(unsigned int cpu);
 
-void platform_request_ipi(int (*handler)(int, void *));
+void platform_request_ipi(/*irq_handler_t*/ void *handler);
 
 void platform_send_ipi(cpumask_t callmap);