m68k: sun3/sun3c: use legacy_timer_tick

These two are different from all other machines:

* sun3 does not call timer_routine() but open-codes it
  except for the profile_tick() call that appears to
  be unintentionally missing.

* sun3x has a commented-out timer irq handler but no
  functional timer tick I could find.

Change both to calling the new legacy_timer_tick here,
which includes the call to profile_tick() but does not
fix sun3x as that is still commented out.
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/m68k/Kconfig.machine

@@ -99,6 +99,7 @@ config HP300
 config SUN3X
 	bool "Sun3x support"
 	depends on MMU
+	select LEGACY_TIMER_TICK
 	select MMU_MOTOROLA if MMU
 	select M68030
 	help
@@ -126,6 +127,7 @@ config SUN3
 	depends on MMU
 	depends on !MMU_MOTOROLA
 	select MMU_SUN3 if MMU
+	select LEGACY_TIMER_TICK
 	select NO_DMA
 	select M68020
 	help

arch/m68k/sun3/sun3ints.c

@@ -73,8 +73,7 @@ static irqreturn_t sun3_int5(int irq, void *dev_id)
 #ifdef CONFIG_SUN3
 	intersil_clear();
 #endif
-	xtime_update(1);
-	update_process_times(user_mode(get_irq_regs()));
+	legacy_timer_tick(1);
 	cnt = kstat_irqs_cpu(irq, 0);
 	if (!(cnt % 20))
 		sun3_leds(led_pattern[cnt % 160 / 20]);

arch/m68k/sun3x/time.c

@@ -77,14 +77,13 @@ int sun3x_hwclk(int set, struct rtc_time *t)
 #if 0
 static irqreturn_t sun3x_timer_tick(int irq, void *dev_id)
 {
-	irq_handler_t timer_routine = dev_id;
 	unsigned long flags;
 
 	local_irq_save(flags);
 	/* Clear the pending interrupt - pulse the enable line low */
 	disable_irq(5);
 	enable_irq(5);
-	timer_routine(0, NULL);
+	legacy_timer_tick(1);
 	local_irq_restore(flags);
 
 	return IRQ_HANDLED;