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>

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)
 {