Fix APIC timer initialization.

We used to write fields that were marked RESERVED and that
are apparently some old stale timer base. Stop doing that.

Verified with Mikael Pettersson, and confirmed to fix ACPI
boot-time lockups for a few people. 

arch/i386/kernel/apic.c

@@ -834,11 +834,10 @@ void (*wait_timer_tick)(void) = wait_8254_wraparound;
 
 void __setup_APIC_LVTT(unsigned int clocks)
 {
-	unsigned int lvtt1_value, tmp_value;
+	unsigned int lvtt_value, tmp_value;
 
-	lvtt1_value = SET_APIC_TIMER_BASE(APIC_TIMER_BASE_DIV) |
-			APIC_LVT_TIMER_PERIODIC | LOCAL_TIMER_VECTOR;
-	apic_write_around(APIC_LVTT, lvtt1_value);
+	lvtt_value = APIC_LVT_TIMER_PERIODIC | LOCAL_TIMER_VECTOR;
+	apic_write_around(APIC_LVTT, lvtt_value);
 
 	/*
 	 * Divide PICLK by 16