Gigabyte M57SLI: Fix watchdog clocksource to be external, not internal.

Reason: The existing code does not tell us why it sets the watchdog
clock at all, but since it appears in cache_as_ram_auto.c instead of
the usual place (Config.lb) there has to be some meaning to it.
Simply do what the proprietary bios does: Use the external clock source.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Ward Vandewege <ward@gnu.org>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2973 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/src/mainboard/gigabyte/m57sli/cache_as_ram_auto.c b/src/mainboard/gigabyte/m57sli/cache_as_ram_auto.c
index 30e2e69..86bb594 100644
--- a/src/mainboard/gigabyte/m57sli/cache_as_ram_auto.c
+++ b/src/mainboard/gigabyte/m57sli/cache_as_ram_auto.c
@@ -273,8 +273,8 @@
         }
 
 	pnp_enter_ext_func_mode(SERIAL_DEV);
-	/* The following line will set CLKIN to 24 MHz */
-	pnp_write_config(SERIAL_DEV, IT8716F_CONFIG_REG_CLOCKSEL, 1);
+	/* The following line will set CLKIN to 24 MHz, external */
+	pnp_write_config(SERIAL_DEV, IT8716F_CONFIG_REG_CLOCKSEL, 0x11);
 	tmp = pnp_read_config(SERIAL_DEV, IT8716F_CONFIG_REG_SWSUSP);
 	/* Is serial flash enabled? Then enable writing to serial flash. */
 	if (tmp & 0x0e) {