Merge tag 'asoc-v3.15-4' into asoc-linus

ASoC: Final updates for v3.15 merge window

A few more updates from last week - use of the tdm_slot mapping from
Xiubo plus a few smaller fixes and cleanups.

# gpg: Signature made Mon 31 Mar 2014 10:49:42 BST using RSA key ID 7EA229BD
# gpg: Good signature from "Mark Brown <[email protected]>"
# gpg:                 aka "Mark Brown <[email protected]>"
# gpg:                 aka "Mark Brown <[email protected]>"
# gpg:                 aka "Mark Brown <[email protected]>"
# gpg:                 aka "Mark Brown <[email protected]>"
# gpg:                 aka "Mark Brown <[email protected]>"