msm: kgsl: Set up DMA map ops and DMA mask for KGSL

The DMA API expects the dma_map_ops and dma_mask for the
KGSL device to be initialized. Otherwise, it falls back
to using bounce buffers.

Change-Id: I1d4b668a5f179f6c49ce8d60a76062c57e1afae2
Signed-off-by: Urvashi Agrawal <urvaagra@codeaurora.org>
Signed-off-by: Kyle Piefer <kpiefer@codeaurora.org>
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>