[Patch] cris: add missing declaration of kgdb_init() and breakpoint()

["Américo Wang" <xiyou.wangcong@gmail.com>]

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This patch fixes such a build error on cris:

arch/cris/arch-v10/kernel/irq.c:239: error: implicit declaration of
function 'kgdb_init'
arch/cris/arch-v10/kernel/irq.c:240: error: implicit declaration of
function 'breakpoint'

So, just declare these two functions.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>

---

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diff --git a/arch/cris/arch-v10/kernel/irq.c b/arch/cris/arch-v10/kernel/irq.c
index 907cfb5..ba0e596 100644
--- a/arch/cris/arch-v10/kernel/irq.c
+++ b/arch/cris/arch-v10/kernel/irq.c
@@ -20,6 +20,9 @@
 #define crisv10_mask_irq(irq_nr) (*R_VECT_MASK_CLR = 1 << (irq_nr));
 #define crisv10_unmask_irq(irq_nr) (*R_VECT_MASK_SET = 1 << (irq_nr));
 
+extern void kgdb_init(void);
+extern void breakpoint(void);
+
 /* don't use set_int_vector, it bypasses the linux interrupt handlers. it is
  * global just so that the kernel gdb can use it.
  */