Fix up the SMSC detection code to probe _both_ old- and new-style
Super I/Os from SMSC. Otherwise not all of them are detected (and there
could theoretically be _two_ of them in a system, so we should probe
for both types anyway).
Signed-off-by: Uwe Hermann <firstname.lastname@example.org>
Acked-by: Uwe Hermann <email@example.com>