st-hal: Check active tx concurrency before disable stale device

During tx concurrency session voice + VA + record voice tx silent
while device switch to hands free. The issue comes after tx device
allowed to disable the backend device during capture concurrencies.
So added tx_concurrency_active check before disable stale device
which we able to recover from tx silent.

Change-Id: Ifd7c0090cecb516d6ee7e25ef3e48323d406d875
1 file changed