asoc: kona: check if codec is enabled

Add support to check if a codec is enabled/disabled in
device tree. Some codecs can be disabled on some platforms
while being enabled on others, so before registering with
sound card check if a codec is enabled.

Change-Id: Iba521889febe1f248365513efa6985d57da73876
Signed-off-by: Dechen Chai <quic_dchai@quicinc.com>