media_codecs: List only those we actually build

Listing codecs that aren't present breaks apps that scan all codecs
for a best match
Update loki to support latest verizon ota of VS98012b

Change-Id: Ia08cc210c7df05d5fa9c17c186db05965ea28ec4
Merge "Update loki to support latest verizon ota of VS98012b" into cm-11.0
Merge branch 'cm-11.0' into martincz