MIPS: arc: remove unused stuff

remove unused _prom_envp and prom_argc macro.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

arch/mips/fw/arc/init.c

@@ -19,7 +19,7 @@
 /* Master romvec interface. */
 struct linux_romvec *romvec;
 int prom_argc;
-LONG *_prom_argv, *_prom_envp;
+LONG *_prom_argv;
 
 #if defined(CONFIG_64BIT) && defined(CONFIG_FW_ARC32)
 /* stack for calling 32bit ARC prom */
@@ -34,7 +34,6 @@ void __init prom_init(void)
 
 	prom_argc = fw_arg0;
 	_prom_argv = (LONG *) fw_arg1;
-	_prom_envp = (LONG *) fw_arg2;
 
 	if (pb->magic != 0x53435241) {
 		printk(KERN_CRIT "Aieee, bad prom vector magic %08lx\n",

arch/mips/include/asm/sgialib.h

@@ -17,12 +17,11 @@
 extern struct linux_romvec *romvec;
 extern int prom_argc;
 
-extern LONG *_prom_argv, *_prom_envp;
+extern LONG *_prom_argv;
 
 /* A 32-bit ARC PROM pass arguments and environment as 32-bit pointer.
    These macros take care of sign extension.  */
 #define prom_argv(index) ((char *) (long) _prom_argv[(index)])
-#define prom_argc(index) ((char *) (long) _prom_argc[(index)])
 
 extern int prom_flags;