sh: Fix handle_BUG() compile error.

handle_BUG() uses TRAPA_BUG_OPCODE which is only defined for
CONFIG_BUG, make sure it's not built when CONFIG_BUG=n.
Signed-off-by: NNobuhiro Iwamatsu <hemamu@t-base.ne.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/kernel/traps.c

@@ -156,13 +156,13 @@ static inline void do_bug_verbose(struct pt_regs *regs)
 {
 }
 #endif /* CONFIG_DEBUG_BUGVERBOSE */
-#endif /* CONFIG_BUG */
 
 void handle_BUG(struct pt_regs *regs)
 {
 	do_bug_verbose(regs);
 	die("Kernel BUG", regs, TRAPA_BUG_OPCODE & 0xff);
 }
+#endif /* CONFIG_BUG */
 
 /*
  * handle an instruction that does an unaligned memory access by emulating the