configs: correct wrong settings in mixer path

Fix the BT SampleRate from '16000' to 'KHZ_16'
in "mmap-playback bt-sco-wb".

Fix the path name from "mmap-buffer-playback hdmi"
to "mmap-playback hdmi".

CRs-Fixed: 2278484
Change-Id: I44ae1d02cb214555967e3f1f42b0cd022e5c4bfe
10 files changed