ALSA: hda: cs35l41: Add Amp Name based on channel and index

This will be used to identify ALSA controls and firmware.
The Amp Name will be a channel identifier (L or R), and an
index, which identifies which amp for that channel.

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220509214703.4482-10-vitalyr@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>