asoc: update be_name and adm_programable_channel_mixer parameters

Some new backends are added and update be_name for channel mixer.
Update adm_programable_channel_mixer parameter to support record
echo from RX.

Change-Id: I628292112f558eca9301c67b36e6de41924f27d5
Signed-off-by: Meng Wang <mengw@codeaurora.org>