Remove legacy recovery fstab

Signed-off-by: zombah <zombah@gmail.com>
Boardconfig: Move ldrcc flag to common

Signed-off-by: zombah <zombah@gmail.com>
makefile: Add audio r_submix binary

Signed-off-by: zombah <zombah@gmail.com>
Boardconfig: Add var to support old audio hal

Signed-off-by: zombah <zombah@gmail.com>