Remove unneeded idle commands from the command stream when updating pagetables and doing TLB flushes. Ths cuts down on the number of commands in the ringbuffer during switches. Change-Id: Ic0dedbad7a0d64c39518b2dd2bb6322f4ab74ba0 Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>