peppy: Disable forced dev mode.

Don't force dev mode. Allow users to enter / exit dev mode as normal.

Change-Id: I168eb04a8ac102a8c4a1ca8936f78f62b001e0eb
Reviewed-on: https://gerrit.chromium.org/gerrit/59492
Commit-Queue: Shawn Nematbakhsh <shawnn@chromium.org>
Tested-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-by: Dave Parker <dparker@chromium.org>
Reviewed-on: http://review.coreboot.org/4321
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/mainboard/google/peppy/chromeos.c

@@ -83,7 +83,7 @@ void fill_lb_gpios(struct lb_gpios *gpios)
 /* The dev-switch is virtual */
 int get_developer_mode_switch(void)
 {
-	return 1;
+	return 0;
 }
 
 /* There are actually two recovery switches. One is the magic keyboard chord,