P51XX: Change bluetooth user group to net_bt_stack

Change-Id: I69b6535b8379dff56dfe02109f404c908d2a4447
Remove BOARD_RECOVERY_SWIPE_SWAPXY

Not needed, messes up touch / swipe in recovery.

Change-Id: Ie13b7c3383b232637bf746e9452f7d98f442fbbf
P51XX: Enable use of FFMPEG codecs for extended formats

Change-Id: Icea972bd34aa530ff55a48061718553b6effdccf