nubus: Use static functions where possible

This fixes a couple of warnings from 'make W=1':
drivers/nubus/nubus.c:790: warning: no previous prototype for 'nubus_probe_slot'
drivers/nubus/nubus.c:824: warning: no previous prototype for 'nubus_scan_bus'
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

drivers/nubus/nubus.c

@@ -793,7 +793,7 @@ static struct nubus_board * __init nubus_add_board(int slot, int bytelanes)
 	return board;
 }
 
-void __init nubus_probe_slot(int slot)
+static void __init nubus_probe_slot(int slot)
 {
 	unsigned char dp;
 	unsigned char *rp;
@@ -827,7 +827,7 @@ void __init nubus_probe_slot(int slot)
 	}
 }
 
-void __init nubus_scan_bus(void)
+static void __init nubus_scan_bus(void)
 {
 	int slot;
 

include/linux/nubus.h

@@ -92,7 +92,6 @@ extern struct nubus_dev* nubus_devices;
 extern struct nubus_board* nubus_boards;
 
 /* Generic NuBus interface functions, modelled after the PCI interface */
-void nubus_scan_bus(void);
 #ifdef CONFIG_PROC_FS
 extern void nubus_proc_init(void);
 #else