sh: Always define TRAPA_BUG_OPCODE.

Previously this was only set when CONFIG_BUG=y. While we rely
on that for handle_BUG() dispatch, we still want to hand the
opcode off to the die chain notifier for determining the trap
value.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

include/asm-sh/bug.h

 #ifndef __ASM_SH_BUG_H
 #define __ASM_SH_BUG_H
 
+#define TRAPA_BUG_OPCODE	0xc33e	/* trapa #0x3e */
+
 #ifdef CONFIG_BUG
 #define HAVE_ARCH_BUG
 #define HAVE_ARCH_WARN_ON
 
-#define TRAPA_BUG_OPCODE	0xc33e	/* trapa #0x3e */
-
 /**
  * _EMIT_BUG_ENTRY
  * %1 - __FILE__