asoc: codecs: Add default case for switch.

Add default case for switch to avoid the
Null pointer dereference for the map and num_ports
variable in for loop.

Change-Id: I59c9dc6e5396bcb409876378c811143da1c81551
Signed-off-by: Prasad Kumpatla <nkumpat@codeaurora.org>
1 file changed