[PATCH REPOST] IB/ehca: In case of lost interrupts, trigger EOI to reenable interrupts

[Roland Dreier]

 > During corner case testing, we noticed that some versions of ehca 
 > do not properly transition to interrupt done in special load situations.
 > This can be resolved by periodically triggering EOI through H_EOI, 
 > if eqes are pending.

So just to be clear: this is a workaround for a hardware/firmware bug?

 - R.