ARC: [build] Build failure with !KPROBES

arch/arc/kernel/traps.c no longer compiles without explicitly including
asm/kprobes.h

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/kernel/traps.c b/arch/arc/kernel/traps.c
index 1d902f4..74839d1 100644
--- a/arch/arc/kernel/traps.c
+++ b/arch/arc/kernel/traps.c
@@ -21,6 +21,7 @@
 #include <linux/kgdb.h>
 #include <asm/setup.h>
 #include <asm/unaligned.h>
+#include <asm/kprobes.h>
 
 void __init trap_init(void)
 {