ALSA: hdsp: Use snd_ctl_enum_info()
ALSA: hdsp: Use snd_ctl_enum_info()

... and reduce the open codes.  Also add missing const to text arrays.

Signed-off-by: Takashi Iwai <4596b3305151c7ee743192a95d394341e3d3b644@suse.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs