[ALSA] sound: align device drivers menus

Modules: Sound Core,Generic drivers

AC97 Kconfig entries broke the ALSA device drivers menu, so move them to a
location where that won't happen, enabling all device sub-menus to be
presented together.

Fixed for the latest ALSA tree by Takashi Iwai <tiwai@suse.de>.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>