mb/lenovo/t430: Disable `usb_always_on` by default in CMOS

Fix regression introduced by commit 7ffb329f.

The default value for usb_always_on is no longer sane and is replaced
by the same default that is used on all other boards (disabled).

Change-Id: Ia8854a8491bc56507d01e08e1ca1e195a1d62bfc
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/20575
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed