media: venus: hfi: Add error message for timeout error

This error can appear with wrong configuration and is difficult to find
as it just returns -ETIMEDOUT with no further message.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>