The interrupts added to the ringbuffer on PTFLUSH and TLBUPDATE were causing a major increase in the number of interrupts from the GPU. This was leading to increase in power and loss of performance. Add a check to turn off IOMMU clocks when going to SLEEP. Change-Id: I41617dd3b7b3f7d9622523f2a1407b912dbd989e Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>