add kernel config for Cirrus Logic HDA Bridge (Apple iMac/MacBook))

add support for the Cirrus Logic HDA Bridge CS8409, this will alllow a lot of Apple Intel iMac & MacBook Computer to have sound out-of-the-box, tested on MacBookPro14,1

[closes issue:  NixOS/nixos-hardware#688 ]

Author: paepckehh

Diff for: pkgs/os-specific/linux/kernel/common-config.nix

@@ -511,6 +511,7 @@ let
       # Support configuring jack functions via fw mechanism at boot
       SND_HDA_PATCH_LOADER = yes;
       SND_HDA_CODEC_CA0132_DSP = whenOlder "5.7" yes; # Enable DSP firmware loading on Creative Soundblaster Z/Zx/ZxR/Recon
+      SND_HDA_CODEC_CS8409 = yes; # Cirrus Logic HDA Bridge CS8409 
       SND_OSSEMUL         = yes;
       SND_USB_CAIAQ_INPUT = yes;
       SND_USB_AUDIO_MIDI_V2 = whenAtLeast "6.5" yes;