ASoC: msm: qdsp6v2: update backend name

Some backend names are not there. Delete them from current be_name.
When the return value of adm_populate_channel_weight is 0, it should
keep running, not return error.

Change-Id: I447b81d6edfc89db6cb3742c1719e745c6071c12
Signed-off-by: Meng Wang <mwang@codeaurora.org>