ALSA: hda/cs35l56: Set cal_index to the amp index

ALSA: hda/cs35l56: Set cal_index to the amp index

Set cs35l56_base->cal_index to the (zero-based) amp index derived
from cirrus,dev-index property.

This is so that factory calibration data will be written to the UEFI
array in the slot equal to the amp index, for compatibility with the
Windows driver.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20251021105022.1013685-11-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>