ALSA: aoa: Skip devices with no codecs in i2sbus_resume()

ALSA: aoa: Skip devices with no codecs in i2sbus_resume()

In i2sbus_resume(), skip devices with an empty codec list, which avoids
using an uninitialized 'sysclock_factor' in the 32-bit format path in
i2sbus_pcm_prepare().

In i2sbus_pcm_prepare(), replace two list_for_each_entry() loops with a
single list_first_entry() now that the codec list is guaranteed to be
non-empty by all callers.

Fixes: f3d9478b2ce4 ("[ALSA] snd-aoa: add snd-aoa")
Cc: stable@vger.kernel.org
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://patch.msgid.link/20260310102921.210109-3-thorsten.blum@linux.dev
Signed-off-by: Takashi Iwai <tiwai@suse.de>