sparc32: Kill SUN4C_LOCK_{VADDR,END} and associated comment.

#define IOBASE_VADDR		0xfe000000

#define IOBASE_END		0xfe600000

/*

 * On the sun4/4c we need a place

 * to reliably map locked down kernel data.  This includes the

 * task_struct and kernel stack pages of each process plus the

 * scsi buffers during dvma IO transfers, also the floppy buffers

 * during pseudo dma which runs with traps off (no faults allowed).

 * Some quick calculations yield:

 *       NR_TASKS <512> * (3 * PAGE_SIZE) == 0x600000

 * Subtract this from 0xc00000 and you get 0x927C0 of vm left

 * over to map SCSI dvma + floppy pseudo-dma buffers.  So be

 * careful if you change NR_TASKS or else there won't be enough

 * room for it all.

 */

#define SUN4C_LOCK_VADDR	0xff000000

#define SUN4C_LOCK_END		0xffc00000

#define KADB_DEBUGGER_BEGVM	0xffc00000 /* Where kern debugger is in virt-mem */

#define KADB_DEBUGGER_ENDVM	0xffd00000

#define DEBUG_FIRSTVADDR	KADB_DEBUGGER_BEGVM