drm/exynos: remove unused fields of struct exynos_drm_gem_buf

The userptr, write and pfnmap of struct exynos_drm_gem_buf are not used
anywhere.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
1 file changed