omxil: Pass a WAVEFORMATEX struct as codec config data for wma1/2

This fixes playback of wma1/2 with OMX.SEC.wma.dec on a Samsung
Galaxy S III. This decoder doesn't seem to be able to handle
wmapro or wma lossless though, at least not with the same codec
initialization data.

This decoder can't seem to handle all variants of wma2 though,
so more investigation is needed.
omxil: Don't try to handle wma pro/lossless via omx

At least the samsung wma decoder (OMX.SEC.wma.dec) in Galaxy S III
can't handle these formats (not at least in the same way as wma1/2),
so don't try, but let it use the normal sw decoders instead.