tilcdc pull request for Linux v4.22
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Jyri Sarha <jsarha@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/cdf82a00-4e40-20a6-cc7d-3278dc23473e@ti.com