ARM: dts: msm: Add AOP QMP nodes for lito

Add the QMP node to facilitiate communication with AOP. The QMP driver
sends messages using the AOP msgram with a mailbox like protocol.

Change-Id: Ie09d22c762916186a3c90a5847a96203a207ab71
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>