[PATCH] fix timer_pit.c warning

[John Levon]

make x86_do_profile available when UP=y,LOCAL_APIC=n

please apply

thanks
john

diff -Naur -X dontdiff linux-linus/arch/i386/kernel/timers/timer_pit.c linux/arch/i386/kernel/timers/timer_pit.c
--- linux-linus/arch/i386/kernel/timers/timer_pit.c	Sat Oct 12 16:54:44 2002
+++ linux/arch/i386/kernel/timers/timer_pit.c	Thu Oct 31 02:30:45 2002
@@ -6,6 +6,7 @@
 #include <linux/spinlock.h>
 #include <linux/module.h>
 #include <linux/device.h>
+#include <linux/irq.h>
 #include <asm/mpspec.h>
 #include <asm/timer.h>
 #include <asm/io.h>