ASoC: q6routing: initialize data correctly

Some of the router data fields are left as default zeros which are
valid dai ids, so initialize these to invalid value of -1.

Without intializing these correctly get_session_from_id() can return
incorrect session resulting in not closing the opened copp and messing
up with the copp ref count.

Fixes: e3a33673

 ("ASoC: qdsp6: q6routing: Add q6routing driver")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>