fix string list parameter in snd_device_name_(free_)hint prototypes
fix string list parameter in snd_device_name_(free_)hint prototypes

Fix the type of the string list parameter in the prototypes of
snd_device_name_hint() and snd_device_name_free_hint().  The prototypes
used char**, while the implementation and the users are using void**.

Distrotech/alsa-lib,zedongchen/alsa-lib,mengdonglin/alsa-lib,gittup/alsa-lib,Distrotech/alsa-lib,Distrotech/alsa-lib,alsa-project/alsa-lib,mikelima/alsa-lib,gittup/alsa-lib,lgirdwood/alsa-lib,mengdonglin/alsa-lib,takaswie/alsa-lib,takaswie/alsa-lib,gittup/alsa-lib,alsa-project/alsa-lib,tiwai/alsa-lib,mikelima/alsa-lib,mikelima/alsa-lib,zedongchen/alsa-lib,mikelima/alsa-lib,mengdonglin/alsa-lib,lgirdwood/alsa-lib,lgirdwood/alsa-lib,mikelima/alsa-lib,alsa-project/alsa-lib,mengdonglin/alsa-lib,tiwai/alsa-lib,lgirdwood/alsa-lib,alsa-project/alsa-lib,tiwai/alsa-lib,Distrotech/alsa-lib,zedongchen/alsa-lib,tiwai/alsa-lib,zedongchen/alsa-lib,zedongchen/alsa-lib,takaswie/alsa-lib,takaswie/alsa-lib,Distrotech/alsa-lib,lgirdwood/alsa-lib,gittup/alsa-lib,mengdonglin/alsa-lib,takaswie/alsa-lib