x86: Remove do_timer hook

This is a left over of the old x86 sub arch support. Remove it and
open code it like we do in time_64.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/kernel/time_32.c b/arch/x86/kernel/time_32.c
index 89bbb52..6fef4ea 100644
--- a/arch/x86/kernel/time_32.c
+++ b/arch/x86/kernel/time_32.c
@@ -28,6 +28,7 @@
  *	serialize accesses to xtime/lost_ticks).
  */
 
+#include <linux/clockchips.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/time.h>
@@ -37,8 +38,8 @@
 #include <asm/hpet.h>
 #include <asm/time.h>
 #include <asm/timer.h>
-
-#include <asm/do_timer.h>
+#include <asm/i8259.h>
+#include <asm/i8253.h>
 
 int timer_ack;
 
@@ -92,7 +93,7 @@
 	}
 #endif
 
-	do_timer_interrupt_hook();
+	global_clock_event->event_handler(global_clock_event);
 
 #ifdef CONFIG_MCA
 	if (MCA_bus) {