ASoC: msm: qdsp6v2: Add support to configure min and max rates

Add support to configure min and max frame rates for EVRC/EVRCB/
EVRCWB/EVRCNW codecs. This change is needed to support variable
length frames for VoIP calls.

Change-Id: Id17dd645b17b1b8c1dc21afcf20dbc7e2c9c0d30
Signed-off-by: Narsinga Rao Chella <nrchella@codeaurora.org>
Signed-off-by: flar2 <asegaert@gmail.com>