ppc64: remove unused include

include/asm-ppc64/kgdb.h

-/* 
- * kgdb.h: Defines and declarations for serial line source level
- *         remote debugging of the Linux kernel using gdb.
- *
- * PPC Mods (C) 1998 Michael Tesch (tesch@cs.wisc.edu)
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _PPC64_KGDB_H
-#define _PPC64_KGDB_H
-
-#ifndef __ASSEMBLY__
-/* To initialize the serial, first thing called */
-extern void zs_kgdb_hook(int tty_num);
-/* To init the kgdb engine. (called by serial hook)*/
-extern void set_debug_traps(void);
-
-/* To enter the debugger explicitly. */
-extern void breakpoint(void);
-
-/* For taking exceptions
- * these are defined in traps.c
- */
-extern void (*debugger)(struct pt_regs *regs);
-extern int (*debugger_bpt)(struct pt_regs *regs);
-extern int (*debugger_sstep)(struct pt_regs *regs);
-extern int (*debugger_iabr_match)(struct pt_regs *regs);
-extern int (*debugger_dabr_match)(struct pt_regs *regs);
-extern void (*debugger_fault_handler)(struct pt_regs *regs);
-
-/* What we bring to the party */
-int kgdb_bpt(struct pt_regs *regs);
-int kgdb_sstep(struct pt_regs *regs);
-void kgdb(struct pt_regs *regs);
-int kgdb_iabr_match(struct pt_regs *regs);
-int kgdb_dabr_match(struct pt_regs *regs);
-static void kgdb_fault_handler(struct pt_regs *regs);
-static void handle_exception (struct pt_regs *regs);
-
-/*
- * external low-level support routines (ie macserial.c)
- */
-extern void kgdb_interruptible(int); /* control interrupts from serial */
-extern void putDebugChar(char);   /* write a single character      */
-extern char getDebugChar(void);   /* read and return a single char */
-
-#endif /* !(__ASSEMBLY__) */
-#endif /* !(_PPC64_KGDB_H) */