[SPARC64]: Kill 'prom_keyboard'.

Nothing ever sets it, so it just takes up space.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/sparc64/kernel/process.c

@@ -114,15 +114,12 @@ void cpu_idle(void)
 extern char reboot_command [];
 
 extern void (*prom_palette)(int);
-extern void (*prom_keyboard)(void);
 
 void machine_halt(void)
 {
 	sstate_halt();
 	if (prom_palette)
 		prom_palette (1);
-	if (prom_keyboard)
-		prom_keyboard();
 	prom_halt();
 	panic("Halt failed!");
 }
@@ -132,8 +129,6 @@ void machine_alt_power_off(void)
 	sstate_poweroff();
 	if (prom_palette)
 		prom_palette(1);
-	if (prom_keyboard)
-		prom_keyboard();
 	prom_halt_power_off();
 	panic("Power-off failed!");
 }
@@ -147,8 +142,6 @@ void machine_restart(char * cmd)
 	if (p) *p = 0;
 	if (prom_palette)
 		prom_palette (1);
-	if (prom_keyboard)
-		prom_keyboard();
 	if (cmd)
 		prom_reboot(cmd);
 	if (*reboot_command)

arch/sparc64/kernel/setup.c

@@ -69,7 +69,6 @@ struct screen_info screen_info = {
 };
 
 void (*prom_palette)(int);
-void (*prom_keyboard)(void);
 
 static void
 prom_console_write(struct console *con, const char *s, unsigned n)