Fix full reset for Ivy Bridge platforms

Experiments have shown that writing plain value of 6 at byte io
address of 0xcf9 causes the systems to reset and reboot reliably.

Change-Id: Ie900e4b4014cded868647372b027918b7ff72578
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: http://review.coreboot.org/1050
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

src/southbridge/intel/bd82x6x/reset.c

@@ -26,16 +26,7 @@ void soft_reset(void)
         outb(0x04, 0xcf9);
 }
 
-#if 0
 void hard_reset(void)
 {
-	/* Try rebooting through port 0xcf9. */
-	outb((1 << 2) | (1 << 1), 0xcf9);
-}
-#endif
-
-void hard_reset(void)
-{
-        outb(0x02, 0xcf9);
         outb(0x06, 0xcf9);
 }