ASoC: msm8994: fix voice call over BTSCO Wideband

Voice call over BTSCO wideband does not work because of
the mismatch in the string values used in user space and
kernel for the aux pcm sample rates. Change the values in
kernel to be consistent with other targets.

Change-Id: Ifd45484705fc0e4b98b2978cf03cbfcc908a8693
Signed-off-by: Narsinga Rao Chella <nrchella@codeaurora.org>
CRs-fixed: 686078