[PATCH] powerpc: Add missing include <asm/stacktrace.h>

[Mathieu Malaterre]

In commit 88b0fe175735 ("powerpc: Add show_user_instructions()") the
function show_user_instructions was added.

This commit adds an include of header file <asm/stacktrace.h> to provide
the missing function prototype. Silence the following gcc warning
(treated as error with W=1):

  arch/powerpc/kernel/process.c:1302:6: error: no previous prototype for âshow_user_instructionsâ [-Werror=missing-prototypes]

Signed-off-by: Mathieu Malaterre <malat@xxxxxxxxxx>
---
 arch/powerpc/kernel/process.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index bb6ac471a784..1c64491e9702 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -65,6 +65,7 @@
 #include <asm/livepatch.h>
 #include <asm/cpu_has_feature.h>
 #include <asm/asm-prototypes.h>
+#include <asm/stacktrace.h>
 
 #include <linux/kprobes.h>
 #include <linux/kdebug.h>
-- 
2.11.0