ALSA: hda - Fix missing initialization of NID 0x0e for STAC925x

The selector widget 0x0e isn't initialized properly in the whole probe
process, thus it can be a wrong value depending on the BIOS setup.

This patch adds the init verb to set it to the max & unmuted.

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