[MIPS] IP22: Fix warning.

  CC      arch/mips/sgi-ip22/ip22-berr.o
arch/mips/sgi-ip22/ip22-berr.c: In function 'ip22_be_interrupt':
arch/mips/sgi-ip22/ip22-berr.c:100: warning: passing argument 2 of 'die_if_kernel' discards qualifiers from pointer target type

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/ptrace.h b/include/asm-mips/ptrace.h
index 85b4436..786f7e3 100644
--- a/include/asm-mips/ptrace.h
+++ b/include/asm-mips/ptrace.h
@@ -86,9 +86,9 @@
 
 extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
 
-extern NORET_TYPE void die(const char *, struct pt_regs *) ATTRIB_NORET;
+extern NORET_TYPE void die(const char *, const struct pt_regs *) ATTRIB_NORET;
 
-static inline void die_if_kernel(const char *str, struct pt_regs *regs)
+static inline void die_if_kernel(const char *str, const struct pt_regs *regs)
 {
 	if (unlikely(!user_mode(regs)))
 		die(str, regs);