[PATCH] sata_sil: remove unneeded ATA_FLAG_SRST from 3512 port info

Now unneeded ATA_FLAG_SRST sneaked into sil_3512 port info while
merging upstream-fixes.  Kill it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>