dsp: q6afe: Add v-validation support for speaker

With speaker protection in v-validation mode, speaker
samples can be tested in early factory mode. Add
support for v-validation feature from driver.

Change-Id: I92493d6d2784cf4dd58021746bffe01180f89d23
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>