drm/exynos: Consider fallback option to allocation fail
drm/exynos: Consider fallback option to allocation fail

To address the case where physically contiguous memory
MAY NOT be a mandatory requirement for framebuffer for
the application calling exynos_drm_gem_dumb_create,
the patch adds a feature to get non physically contiguous
memory for framebuffer, if physically contiguous memory
allocation fails and if IOMMU is supported.

Signed-off-by: Vikas Sajjan <e4e4e356810ed4fa110eede1ef43bb4cf9f752c5@linaro.org>
Signed-off-by: Arun Kumar <1178d5c4f25e2eee977127a861292da1c3e32ff6@samsung.com>
Signed-off-by: Inki Dae <bae4a7a27bbc965064e97edd6e179ac4979db440@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs