ARM: dts: msm: Add GPU support for MSM8953

Add device node for MSM8953 GPU and its properties.
It is needed to support graphics driver which is
accessed by various clients.

Change-Id: I7c5206c17a040d49f7b7b9715a21a7ab8d01ba0c
Signed-off-by: Sunil Khatri <sunilkh@codeaurora.org>