sound fixes for 4.1-final

Nothing looks scary, just a few usual HD-audio regression fixes
and fixup, in addition to a minor Kconfig dependency fix for
the old MIPS drivers.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=KSPF
-----END PGP SIGNATURE-----