use gms location provider

Change-Id: I85135a7fe887cc2be77dcb50afdab8b83e34bc6c
add audio.r_submix.default

Change-Id: I82ded019051605a137be19cbeacdeef3c8b0520b
use sync framework

Change-Id: I3b594dd4b0dd4613ea5a157622c457bf34bfc8ad
use default readahead for blk0 & 512 for blk1

Change-Id: If45d9c81e24a00f3488bafa77842b4fbd53d5138