Assign default value for codec private data when property not given.
If without those default value and property, the codec will work
abnormally.
Signed-off-by: NJohn Hsu <KCHSU0@nuvoton.com>
Signed-off-by: NJohn Hsu <supercraig0719@gmail.com>
Signed-off-by: NMark Brown <broonie@kernel.org>