ASoC: APR: Fix missing APR deregister from asm

APR deregister is to be called for two ports from both
q6asm_callback(during RESET) and q6asm_audio_client_free.
In race condition between the two, APR deregister is called
only for one port. The mismatch in apr register-deregister
count causes apr not to reset service after ssr, causing
APR communication failure.

Change-Id: Ibd0528215bf2fb986eda03ae0d683b2af31358fe
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>