sm8x50: mixer_paths: Enable sm8550hdk on-board Speakers am: 66e558c563

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/3177720

Change-Id: I1c2c48ec8237872052e0aee3e4108798347a0b98
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>