audio: Fix WBS sample rate usage

Fixes: BUGBASH-302

Correctly use 16khz for the WBS-SCO pcm_config.
No more garbled or mute in-call sound on bt.

Apply together with a device specific port of:
https://review.lineageos.org/#/c/177996/
and REMOVE any definitions of
SCO_WBS_SAMPLE_RATE
https://review.lineageos.org/#/c/178371/

This requires testing for all devices using:
android_hardware_samsung
(universal audio HAL part)

Change-Id: I84fb1b234bf2880bf98bf99f1e4ff6c05500b0e3