[PATCH 17/21] powerpc: Add missing prototype for sys_debug_setcontext

In commit 81e7009ea46c ("powerpc: merge ppc signal.c and ppc64 signal32.c")
the function sys_debug_setcontext was added without a prototype.

Fix compilation warning (treated as error in W=1):

  CC      arch/powerpc/kernel/signal_32.o
arch/powerpc/kernel/signal_32.c:1227:5: error: no previous prototype for ‘sys_debug_setcontext’ [-Werror=missing-prototypes]
 int sys_debug_setcontext(struct ucontext __user *ctx,
     ^~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

Signed-off-by: Mathieu Malaterre <redacted>
---
 arch/powerpc/include/asm/asm-prototypes.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h
index 0af1925e30db..7c23d9ead694 100644
--- a/arch/powerpc/include/asm/asm-prototypes.h
+++ b/arch/powerpc/include/asm/asm-prototypes.h

@@ -89,6 +89,10 @@ int sys_swapcontext(struct ucontext __user *old_ctx,
 long sys_swapcontext(struct ucontext __user *old_ctx,
 		    struct ucontext __user *new_ctx,
 		    int ctx_size, int r6, int r7, int r8, struct pt_regs *regs);
+int sys_debug_setcontext(struct ucontext __user *ctx,
+			 int ndbg, struct sig_dbg_op __user *dbg,
+			 int r6, int r7, int r8,
+			 struct pt_regs *regs);
 #endif
 long sys_switch_endian(void);
 notrace unsigned int __check_irq_replay(void);

-- 
2.11.0