Fix CONFIG_ use in i8254.c

We always define CONFIG_ variables, even if they're not set.
Hence, remove the check whether CONFIG_UDELAY_TIMER2 is defined

Change-Id: Iefdf2389941f2cc63ae4f13ac6b213da4c96b201
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1694
Reviewed-by: Marc Jones <marcj303@gmail.com>
Tested-by: build bot (Jenkins)

src/drivers/pc80/i8254.c

@@ -35,7 +35,7 @@ void setup_i8254(void)
 	outb(0x12, TIMER1_PORT);
 }
 
-#if defined(CONFIG_UDELAY_TIMER2) &&  CONFIG_UDELAY_TIMER2
+#if CONFIG_UDELAY_TIMER2
 static void load_timer2(unsigned int ticks)
 {
         /* Set up the timer gate, turn off the speaker */