CHROMIUM: drm/exynos: gem: Fix release ioctl arg type

CHROMIUM: drm/exynos: gem: Fix release ioctl arg type

exynos_drm_gem_cpu_release_ioctl should use drm_exynos_gem_cpu_release
arguments.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
BUG=none
TEST=builds clean; sanity check display still functional on device

Change-Id: Ic877e679a56d31c6333cfd6dbdc1713248cccfc8
Reviewed-on: https://gerrit.chromium.org/gerrit/40230
Commit-Queue: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Tested-by: Daniel Kurtz <djkurtz@chromium.org>