[PATCH] MIPS: irq: Add missing prototypes for init_IRQ()

[Pujin Shi <shipujin.t@gmail.com>]

init_IRQ() have no prototype, add one in irq.h

Fix the following warnings (treated as error in W=1):
arch/mips/kernel/irq.c:52:13: error: no previous prototype for 'init_IRQ' [-Werror=missing-prototypes]

Signed-off-by: Pujin Shi <shipujin.t@gmail.com>
---
 arch/mips/include/asm/irq.h | 1 +
 arch/mips/kernel/irq.c      | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h
index c5d351786416..992f8040d3d9 100644
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -21,6 +21,7 @@
 #define IRQ_STACK_START			(IRQ_STACK_SIZE - 16)
 
 extern void *irq_stack[NR_CPUS];
+void init_IRQ(void);
 
 /*
  * The highest address on the IRQ stack contains a dummy frame put down in
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index 85b6c60f285d..07d2c86e7ff5 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -21,6 +21,7 @@
 #include <linux/kallsyms.h>
 #include <linux/kgdb.h>
 #include <linux/ftrace.h>
+#include <asm/irq.h>
 
 #include <linux/atomic.h>
 #include <linux/uaccess.h>
-- 
2.18.1