ARM: dts: msm: Add support for ABUG board for sdxpoorwills-ttp

Add support for the ABUG add-on board that connects to
sdxpoorwills-ttp platforms adding IMU sensors, Ethernet
PHY and other peripherals.

Change-Id: I1aa0bd6db06afc31bfa22429cfcad747ab3ac0e5
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>
Signed-off-by: Puneet Yatnal <puneet@codeaurora.org>