configs: set echo path sample rate for hfp and sva

hfp echo path: 48kHz, 1 channel;
sva echo path: 48kHz, 6 channels;

Change-Id: Ie7427d425fa2d02625eb37d805b05108efdaccea
Signed-off-by: Guodong Hu <guodhu@codeaurora.org>