i386: Fix regression introduced by commit 8c63d47651f7

A local variable was deleted that should not have been

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>

lib_i386/pcat_timer.c

@@ -25,10 +25,13 @@
 #include <asm/io.h>
 #include <asm/i8254.h>
 #include <asm/ibmpc.h>
+#include <asm/interrupt.h>
 
 #define TIMER0_VALUE 0x04aa /* 1kHz 1.9318MHz / 1000 */
 #define TIMER2_VALUE 0x0a8e /* 440Hz */
 
+static int timer_init_done = 0;
+
 int timer_init(void)
 {
 	/* initialize timer 0 and 2
@@ -52,6 +55,8 @@ int timer_init(void)
 	irq_install_handler (0, timer_isr, NULL);
 	unmask_irq (0);
 
+	timer_init_done = 1;
+
 	return 0;
 }