audio: Change API version to 2.0
audio: Add r_submix
audio: Add get_presentation_position
Sync with grouper audio hal and add get_presentation_position implementation
Revert "audio: Change API version to 2.0"

This reverts commit 701e90180f14fb2ad0e13b686de81e930d6a8dce.

Our lib is already set to API 2. This is module api and it should stay 0.1
Update prebuilt kernel
BoardConfig: Large font in recovery
User large font in recovery.
Skip DOC build to speed up compilation.