it821x: Add ultra_mask quirk for Vortex86SX
Brandon Philips authored
On Vortex86SX with IDE controller revision 0x11 ultra DMA must be
disabled. This patch was tested by DMP and seems to work.

It is a cleaned up version of their older Kernel patch: 
 http://www.dmp.com.tw/tech/vortex86sx/patch-2.6.24-DMP.gz

Tested-by: default avatarShawn Lin <shawn@dmp.com.tw>
Signed-off-by: default avatarBrandon Philips <bphilips@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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