drm/tegra: gem: Use dma_mmap_writecombine()

Use the existing API rather than open-coding equivalent functionality
in the driver.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2014-09-24 16:14:04 +02:00
commit 53ea72132d