Back ported following patch from upstream to support 4-bit access width which 
is required by T-state control.
Below are original commit comments from upstream.
commit 49fbabf56dc715bbb51e59742e82ba762790aac0
Author: Zhao Yakui <yakui.zhao@xxxxxxxxx>
Date: Thu Nov 15 17:01:06 2007 +0800
 ACPI: Handle I/O access width requestst that are not a multiple of 8 bits.
 We've run into BIOS that hand us 4-bit access width requests
 for T-state control when the code expected only multipls of 8-bits.
 Round up.
 Signed-off-by: Zhao Yakui <yakui.zhao@xxxxxxxxx>
 Signed-off-by: Li Shaohua <shaohua.li@xxxxxxxxx>
 Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>

Attachment: dom0-tx-fix.patch
Description: dom0-tx-fix.patch

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