linux-firmware: add packages with SM8550 and SM8650 audio topology files

Split audio topology files to separate packages so that users of the
corresponding boards don't have to pull in the whole linux-firmware
package.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>