it with our new setting. Otherwise we might end up with an illegal value as the
interrupt threshold which might inhibit interrupt generation alltogether
depending on the controller implementation. This was the case for the ATI/AMD
SBx00 chipsets. Therefore fixes#5551.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41690 a95241bf-73f2-0310-859d-f6bbb57e9c96