linux-firmware: make qcom-sc8280xp-lenovo-x13s-audio install Linaro licence

The linux-firmware-qcom-sc8280xp-lenovo-x13s-audio package includes
audio topology file which has separate licensing terms. Make this
package RDEPEND on the corresponding licence package.

Fixes: 958d6a20 ("linux-firmware: package audio topology for Lenovo X13s")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>