x86/amd-iommu: Move compl-wait command building to own function

This patch introduces a seperate function for building
completion-wait commands.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2011-04-06 10:53:48 +02:00
commit ded467374a