ALSA: hda: Support for Ideapad hotkey mute LEDs

New ideapad helper file with support for handling FN key mute LEDs.
Update conexant and realtec codec to add LED support.

Suggested-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Signed-off-by: Jackie Dong <xy-jackie@139.com>
Link: https://patch.msgid.link/20250115162515.15026-1-xy-jackie@139.com


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