dsp: adm: change sample rate for FLUENCE_EF module

FLUENCE_EF module in COPreP topology doesn't support
44.1Khz sample rate. Set sample rate to 16Khz for
VPM_TX_DM_FLUENCE_EF_COPP_TOPOLOGY, which contains
FLUENCE_EF module.

Change-Id: I527da1a70cacba1014b2a706216172d12066b909
Signed-off-by: kunleiz <kunleiz@codeaurora.org>