[PATCH v3 2/6] ALSA: xen-front: Read sound driver configuration from Xen store

From: Oleksandr Andrushchenko Read configuration values from Xen store according to xen/interface/io/sndif.h protocol: - introduce configuration structures for different components, e.g. sound card, device, stream - read PCM HW parameters, e.g rate,

[PATCH v3 2/6] ALSA: xen-front: Read sound driver configuration from Xen store

From: Oleksandr Andrushchenko Read configuration values from Xen store according to xen/interface/io/sndif.h protocol: - introduce configuration structures for different components, e.g. sound card, device, stream - read PCM HW parameters, e.g rate, format etc. - detect stream type