Create separate partition for shared command queues. Virtual device addresses for shared command queues need to be from upper 16MB region of mon-secure virtual device address space. This change creates a partition to ensure this. Change-Id: Iba22daf93b7d08c70f43685de7182a2f235a7690 Signed-off-by: Vinay Kalia <vkalia@codeaurora.org>